Anyone can believe anything they choose.
Not the disciplined critical thinker. We're born able to believe anything - the childlike faith many espouse as a virtue. Worse, we lack the defenses against false belief or to determine when an idea is correct or not. And worse than that is that we don't know such methods exist, what they can do, and why they should be embraced to the exclusion of all other "ways of knowing." But once one achieves that, belief is no longer optional. The conclusions of sound arguments recognized as such are routinely added to one's fund of knowledge, and everything else is rejected perforce.
And they can do so logically and reasonably based on how doing so impacts their lives and the lives of those around them.
What you are saying is that it is reasonable to invent an idea and believe it if it comforts you. That's a different goal than discerning truth, which is what reason is most useful for. And truth can liberate one from needing a god belief to be comfortable, which I find more reasonable in the practical sense in which you mean the word.
do you want to contemplate and discuss/debate the actual nature and existence of God?
Impossible. Nobody knows if god exist much less their nature. Of course, it you're comfortable making up things and believing them, then go for it, but your thoughts wouldn't have much value to those already comfortable without faith or religion.
To me, God exists as a possibility that we cannot deny because we don't have the cognitive capacity to do so.
Agreed, just like every other unfalsifiable claim. You also cannot rule out vampires and leprechauns.
I'm just pointing out that even the most "irrational" among us is following a rationale.
A rationale doesn't imply sound thinking. In fact, its part and parcel of rationalization (motivated thinking).
Waiting for evidence that cannot possibly be identified as such is just foolish.
Believing without it is foolish.
I am not religious, for a number of reasons.
You are religious as I use the word. Here you are defending theism in yourself and others.
And you want to fight with religion way too much.
Nobody's fighting with religion. Atheists have defeated it in their own lives already, and most don't care what the rest believe until they stat organizing and politicizing their religions to impose it on others. Really. If my neighbor wants to dance around a tree in his back yard at midnight baying at the full moon while shaking a stick with a bloody chicken claw nailed to it in order to center himself and give his like meaning, that's fine, as long as he isn’t violently insane, sacrificing animals, and he keeps the noise down. If you think that's facetious, it's not.
All the more reason I try to eschew "belief". Faith is OK, because it retains it's skepticism. And with that I can easily be wrong, or change my mind. But "belief" becomes an ego-trap; fighting to maintain itself by any means.
Faith is a path to belief - the one that sidesteps evidence and reason. All belief is either justified or not, no belief being both or neither.
It's just a place-holder term. A label we use to refer to the great mystery that gives us all those gifts (listed above). I honestly don't see why you and some others find that so objectionable that you have to "ban the word" from your thinking.
The word "God" carries baggage that makes its use problematic if one doesn't mean the judgmental man in the sky. Einstein used it to mean the laws of nature, which created tremendous confusion and ambiguity. It's a word I don't need to describe any aspect of reality, so I don't. Look at what it's done for your message. You want to claim that you're not religious and that the word doesn't refer to a person, but who's buying that? If that were literally correct, you used the wrong word, just like Einstein. But I don't think that's the case. Here you are objecting to others avoiding the word. This is how many theists try to get their gods in through the back door. They deny that they are discussing a god, just like the ID people. If they can just get others to use the word god to describe their naturalistic worldview, they feel that they've gotten a foot in the door.
That some people keep focusing on religion as the 'control culprit' in our society is, to me, just a silly bias.
That's one purpose of religion. It's how it's used in Afghanistan. In America, it's been about piercing the church-state wall and controlling school curricula and criminalizing what Christians think offends Jesus - abortion, and if possible, same-sex marriage and contraception.
But its main function is as a self-licking ice cream cone that exists to perpetuate itself and support and empower people who generate nothing of value. They just build more churches, hire more clergy, and try to draw as many wallets to their collection plates as possible by putting more Bibles in hotel drawers and running ads for Jesus during the Super Bowl.
Think about what a coup forming a priestly class was for the priests. Even today, being clergy is a great gig. No manual labor or hot sun. No education or training necessary if you want to open your own church. No government oversight. No expensive equipment needed. People bring you money every week to do nothing except tell them how to live. Instant respect and social status, although not so much as before.