You should [not] have kids. Not because its fun, or rewarding, or in your evolutionary self-interest.
You should [not] have kids because its your [ethical] duty to [not] do so.
My argument is simple. Most people live lives that are, on net, happy. For them to never exist, then, would be to deny them that happiness. And because I think we have a moral duty to m[in]imize the amount of happiness in the world, that means that we all have an obligation to make the world as [un]populated as can be.
[...]
"[E]volutionary self-interest" (Tännsjö) renders the above absurd and, thus, its source material.