As radical as our new member Buckaroo sounds, he is, in all probability, right.
The numbers don't lie; there are already far too many of us on Spaceship Earth. And, if you want to be analytical about it, that's not such a bad thing. Those of us who do survive a Global Calamity, be it Famine, War or Pestilence, should be the the best ones to mentor the surviving generation.

I know, it sucks, but, hey, 20,000,000,000 people on this world all well-fed and happy? I just can't see it.