No, I'm probably the most entertaining and interesting person you will ever meet. I do not have children, so I cannot possibly think of the world in such terms. But I do not think that I'll have kids, at least not for a while. Things will happen to this world whether you like it or not, and you have no control over it. You get the sense of protectiveness because you're a woman, probably a needy woman and potentially a lonely one, and it's only natural. This world is a wonderful place, it just depends on how you perceive it. I love life, myself.
You sound like McNamara (?) on Vietnam, "We have to destroy it in order to save it." That's the whole contradiction in Malthusian and environmentalist thought. Both of which have elitist origins in Pax Britannica, despite the recent populist twist given to them by the U.S. media cartel and its minions around the world.
"There is an overpopulation problem" ~ if you say there is a problem then I presume (tell me if I'm wrong) that it's a problem because it could endanger human survival. And then you turn around and say, let people die or better yet kill them. So why consider human survival a "problem" in the first place? Let the chips fall where they may.