[vel0city]

> you needed somebody to help out and look after you when you were old

Even with social programs in society, this still hasn't gone away. This is still kind of a reason to have kids, and for your siblings to have kids, and have family networks grow to help support each other.

> you're putting people into a world knowing that there is a non-trivial probability that they will suffer all their lives through wars, famine, social unrest, and other man-made disasters

Once again, all of this has also been true for all of human history. Other than a brief moment for the northwestern part of the world for wealtheir people in the 90s-maybe 00s, this has just been the normal state of affairs. Life has always had suffering involved.