Only because you're defining one as normal and the other as abnormal.

It is possible for the human species to exist without cigarette smoke, and doubtless for at least part of our history it did not exist.

It is not possible for the human species (or any form of mortal biological life) to exist without children.

If you want to try to define the latter observation of reality as “abnormal”, fill your boots.

	▲	its_ubuntu 2 hours ago \| parent [-]
		> It is possible for the human species to exist without cigarette smoke Yeah, and it's possible for it to exist without whatever pleasures you enjoy too that I don't approve of. I'm sure I can invent some twisted, self serving reasoning to justify why your activity should be banned, as I don't like it, and my judgment is better than yours. > It is not possible for the human species (or any form of mortal biological life) to exist without children. No, but some people's kids we could do without. Especially the ones who want to ban everything.

I remember when I was young and edgy, and thought dunking on parents was simply sharing hard truths.

Boy am I glad I grew out of that mindset.