“Consider an analogy. If one is playing a game of backgammon, it is entirely reasonable to make various moves. Indeed, one is not playing backgammon unless one is making (permitted) moves. There are justifications for this move and for that one. It is an entirely different matter to ask what the point of backgammon is, whether one should be playing backgammon at all, and whether one should pass it on to the next generation (by teaching it to children—or by creating children to whom one can teach it). Similarly, it can be entirely reasonable to relieve headaches and prevent harms to children and yet worry that one’s life as a whole—or human life in general—has no cosmic purpose. The absence of cosmic meaning may provide one with a reason to regret one’s existence or to desist from perpetuating the whole pointless trajectory by abstaining from bringing new people into existence.”
DB