Have any anthropologists studied the Darwinian logic of choosing marginal comfort increases over reproducing?
Choosing both, either, or neither of the two options are all valid. And I think that's nice.
Memetics are also a consideration.
Even if one's genetics aren't passed on, their memetics do which nullifies the proposition of competition to begin with. You play, you don't play, you win!
shitposting on reddit is not a net contribution to society.
most people work bullshit jobs where the ownership class skims value off the top.
tell me, what memes did a peasant in 600AD Hispania, or 1100 Samerkand, leave for us?
Value propositions on memetics is a different discussion anyways so I don't understand how it fits here.
As far as extrapolating my current choices effect on my descendants, nothing could be simpler; I have none and so there will be no effect on them. This is something that brings me much peace. I do wish that people with or without children would take better care of this planet, since I find the continued degradation of it to be the most depressing aspect of modern life, but I would think that parents in particular would be more future oriented.