Question: Which of these two proposed explanations for morality is more arbitrary?
You are writing from a corrupted perspective of not actually allowing for that God to exist. In God does exist and does institute a system on moral requirement by what standard could you ever say they were wrong?
Yes I could. By my own standards. (Which is what we all use anyway.)
If god said slavery was cool, and even included some rules on how to treat them, I could still say "I think owning another human being is wrong."
If god said, "Murder your child because I said so" I could say, "No, I think taking the life of an innocent child is wrong."
Morality, by your definition, appears to be nothing more than obedience to authority (and in this particular case, an authority that is undetectable). That, to me, is not morality.
And on a side note, you have said that god has written morality on our hearts, or something to that effect, so in your opinion as well, we are using our own morality in making moral decisions.
It is far more reasonable to conclude you evolution raddles brain has selected for survival whether survival is good or bad.
My evolutionary/logical/reasonable brain has selected for survival because existing is better than not existing. Being happy is preferable to being unhappy. Not suffering is preferable to suffering. Being kind is preferable to being unkind, especially because I'm likely to have kind behavior returned to me.
God's character does not change the way our maturity changes does mandate he adjust things along he way. It is exactly the same thing we do with a child as they grow up as God does with humanity as it grows up.
I'm not exactly sure what this says, but are you saying that god's moral character changes and that similarly our own moral character changes as we raise kids? That what we teach our kids when they're young differs from what we teach them when they're older? If that's what you're saying, I would disagree with that.
You may question or reject and inconvenient system of morality you wish even if God created, and in fact I believe you have done that very thing. What you can't do is produce a firmer foundation for morality that would provide a transcendent objective by which to judge God. This is nonsense. I can chose to believe the sun is made of ice or that light speed is - 56 pounds per arc degree. What defines their character and the character of what they effect will not change a bit whether I reject it and invent an arbitrary description as desired or not.
You judge god every time you tell us he/she/it is moral and just.
And let's just get this straight here: The descriptions given to you as to how secular people come to make moral decisions are not arbitrary in any sense of the word. They are built on experience, empathy, social interactions, reason, logic, etc.
If we were arbitrarily making morality decisions, those decisions would be based on personal whim, random choice without any reasoned thought behind it, which is not the case, given what has been described to you. OR They would be based on the personal whim or random choice of some dictatorial authority figure. Hmmmm.
It appears that since right and wrong can be objectively rooted the new target is the definition of arbitrary. First by what method have you established that whatever it is you arbitrarily invent is known to be consistent with the known moral truth of the universe? There are only a few possibilities.
The method of analysis through reason, logic, rational thought, cause and effect, experience, social interactions, etc.
Scenario A
1. A God exists and says A, B, and C are good and X, Y, Z are bad.
2. I come along and say A, B, and C are good and X, Y, Z are bad.
3. My claims are grounded in the absolute foundation of the nature of God and the universe (including us) he created.
Your claims are rooted in obedience to a dictatorial authority figure which you cannot question. So if god told you later on today that you should kill your newborn son, the moral decision would be to do so.
Scenario B
1. A God exists and says A, B, and C are good and X, Y, Z are bad.
2. You come along and say you do not care if A, B, and C are actually good, you declare P, Q, and R are actually what's moral.
3. Given that in this scenario God exists, you could very well say God was evil or you did not like what he wanted and you instead were going to do P, Q, and R. However you have no frame of reference by which you could say God was immoral and you were moral. That is a logical absurdity. You are left with simply redefining moral good as P, Q, and R. Let me show you why this is meaningless. Let's say that Genghis Kahn conquered the world and killed off everyone that disagreed with his blood thirsty narcissism. He could have had murder instituted as a moral good. How would you have proven him wrong without simply arbitrarily assuming human optimality was good beforehand? If God said X was right by what authority can you PROVE him wrong even if he was (though that is not even a coherent idea).
It's not arbitrary to assume that human optimality is good. We can observe that it is good. We can observe that when humans are dead they cease to exist and therefore cannot do anything at all, so we can determine that existing is preferable to not existing.We can also determine from observation and experience that a world in which everyone is constantly trying to murder everyone else is not optimal because at any given moment your life or the life of your loved ones could be snuffed out based on the personal whim of another person. Everyone would constantly be living in fear. Which is why we determined long ago that murder is not a behavior we want present in our civilization.
We determined long before the supposed Moses story in the Bible that murder was not optimal for a human society to flourish, and it's insulting and bizarre to anyone to assume that humans couldn't have figured this out on their own without some holy pronouncement.
If you're actually going to assert that we have no way of determining that human optimality is well ... optimal, then I guess you don't believe in medical science either? Why strive to be healthy if we can't absolutely and positively know exactly what that is? Why would we want to be healthy instead of unhealthy? Why want to live instead of die? Ask yourself these things.
Scenario C.
1. There is no God and he never said anything.
2. You simply assert that human optimality or flourishing is good.
3. Human flourishing means most things will not flourish.
4. You assume we have more value than everything else without any way to prove it.
5. What if a more powerful race shows and demands their flourishing is good. I can guarantee this moral ambiguity would disappear from your mind in about half a second and moral absolutes that only God can justify asserted and defended with your life.
See above. These are not "simple assertions" or "arbitrary" decisions. I'm not sure why "human flourishing means most things will not flourish." Why? How does one thing flow from the other? (1-5)
Plus, in regards to #5: That's like saying, "Slavery is good for the slave owners, so it aids human flourishing." Of course, that's if nobody bothered to ask the slaves how they felt about being someone else's property. It appears you're still making the assumption that human morals are arbitrary.