That's the problem: evolution drives life otherwise Evolution wouldn't exist.
Now we circumvent already things evolution purports like the strongest survivies. We also compensate for errors or flaws like eye sight, mental illness etc. We question eating meat. We cook meat. We self control and we evolved evolution by inventing the internet (highspeed human interconnect) and computers. Potentially the internet itself with all it's inputs (blogs, comments, news), processing power in-between and outputs will become a new thing.
We also do not support not lifing. If I would tell my parents that I want to stop/end my life I would not be allowed.
Why? Because of course the only true answer can be that lifing is good.
Now let's question this: we have no impact (universe will disintegrate), we have a lot of pain in the world, we can't guarantee to anyone that they will ha e a good life and there is no purpose in life either besides the purpose you create for yourself.
We can't ask someone if they want to be a life before they get born either.
In my logic the most social thing would be to be aware of everything around you and stop creating new brains to entertain yours.
How many brains in agony are okay? What is the perfect ratio? 1:10000? 1:100?
Making kids is not a logical answer it's an evolutionary one.
Lucky enough for our society my type of thinking will not propagate much anyway.
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People are doing what they want anyway. It's just a discussion :)
Moral and ethics is a construct of a self-sufficient, sustainable and fair society. Nothing else.