Hopefully we can do this for the species as a whole and gradually find equilibrium at a more sustainable population.
It's game theory the same as pollution. "We" can do whatever we want but if not "everyone" is doing it then the impact is fairly limited. You would be better off having children and just consuming less than making a grave decision that impacts your whole family tree for the sake of a Humanity collective that likely will not be making the same "sacrifice".
Indeed, who is to say that the perpetuation of one’s family tree is at all desirable or necessary?
Maybe the best outcome is not to play the game at all.