which one do you prefer? having kids or no kids? and why??

No, absolutely not. At least, certainly none of my own, even if I were capable of it... I don't really see the point in procreating with the world on such a catastrophic trajectory. On the other hand, if I find myself in a situation where I have a home and resources to share, and some unfortunate already-existing kids need those things, I'd certainly offer them a place. That would be just as true for non-kids though, so I dunno how much of a "parent" that'd really make me.