It is odd you say that. I stand opposed to your god, but yet I support peace, tolerance, and helping the poor far more than what most Christians do.
What exactly is justice? Is it anything more than our primitive urges and desires to see punishment?
Much suffering is never redressed. However, it doesn't meant future happiness is futile. Having good coping methods helps a lot.
So? Of course we will be replaced by the predecessor of modern Homo Sapiens. Hopefully this future species will be an improvement.
How can you think this? Altruism is doing good for nothing more than the sake of doing good, giving yourself selflessly without expecting anything in return - such as helping a friend in need. How is that ever pointless?
You may think that you support peace, tolerance, and everything that is good. However, you have no real reason to do it. All you have are feelings that, in the absence of God, are nothing but an evolutionary mirage. Furthermore, if you follow your ideology to its ultimate conclusions, you actually support everything that is not good, since you rob people of any rational reason to do good. For instance, if someone has an overwhelming desire to rape, what will you tell him? Will you tell him that he should not do it because it hurts other people? He will reply that the suffering of his victim is more than compensated by the pleasure received by him. Will you tell him that raping is bad for our species? He will tell you that that is not true because in some species, such as the sharks, raping is the only means of reproduction and that, moreover, all he has are the few years of his life and that it is indifferent to him if after his death our species goes extinct or not. Will you tell him to sacrifice his evil urges for the good of others? He will say that in the absence of an afterlife, all he can derive pleasure from is this earthly existence and that, hence, he sees no reason to sacrifice himself for others. You may seem that I am exaggerating and that no rapist will reason in this way. Nonetheless, it has happened. This is actually the way in which Ted Bundy used to think and from a purely materialistic point of view, no one was able to prove him wrong. Bundy said the following:
"Then I learned that all moral judgments are "value judgments," that all value judgments are subjective, and that none can be proved to be either "right" or "wrong." I even read somewhere that the Chief Justice of the United States had written that the American Constitution expressed nothing more than collective value judgments. Believe it or not, I figured out for myself - what apparently the Chief Justice couldn't figure out for himself: that if the rationality of one value judgment was zero, multiplying it by millions would not make it one whit more rational. Nor is there any "reason" to obey the law for anyone, like myself, who has the boldness and daring, the strength of character, to throw off its shackles. ... I discovered that to become truly free, truly unfettered, I had to become truly uninhibited. And I quickly discovered that the greatest obstacle to my freedom, the greatest block and limitation to it, consists in the insupportable value judgment" that I was bound to respect the rights of others. I asked myself, who were these "others"? Other human beings, with human rights? Why is it more wrong to kill a human animal than any other animal, a pig or a sheep or a steer? Is your life more to you than a hog's life to a hog? Why should I be willing to sacrifice my pleasure more for the one than for the other? Surely, you would not, in this age of scientific enlightenment, declare that God or nature has marked some pleasures as "moral" or "good" and others as "immoral" or "bad"? In any case, let me assure you, my dear young lady, that there is absolutely no comparison between the pleasure I might take in eating ham and the pleasure I anticipate in raping and murdering you. That is the honest conclusion to which my education has led me"”after the most conscientious examination of my spontaneous and uninhibited self.
Regarding altruism being pointless when it can't change anything. Would you throw yourself into a tempestuous sea in order to save someone that has already sunk too deep to be reached?