Yes, overpopulation is already a problem. We are already IN an extinction event mostly caused by us. People who are still having 18 kids baffle me. I had one kid and my tubes tied the same day she was born. I think we are likely to cause our own extinction (and that of millions of other species) if population control laws aren't put into effect right now. Which basically means we are screwed.
“Eternity is a terrible thought. I mean, where's it going to end?”
― Tom Stoppard, Rosencrantz and Guildenstern Are Dead
― Tom Stoppard, Rosencrantz and Guildenstern Are Dead