While I see your point, I don't ascribe to the nihilistic point of view that life has no meaning therefore no reason. I find it dark and disheartening. To me, the fact that we can even have this conversation is a miracle and there's a certain happiness I get from knowing that despite my suffering and yours, we are still strangers who can engage in a conversation and have fun with it (I hope this is how you feel, too!).

I'm more of an absurdist. While there may be no end to the suffering, we can still derive pleasure and satisfaction from life. We can enjoy it if we want find ways to, because that's our natural desire, to seek happiness.

If you want to try looking at life like that, then this question becomes MUCH more interesting. Because despite suffering, this society found a way to continue. The question of whether or not it's moral, or how it's moral, depends on if life has meaning.

All questions kind of depend on that, no?