The species as a whole is wasteful as hell, especially when the standard of living we enjoy in developed nations is now starting to be demanded by emerging, exploding populations in places like India and China. There's absolutely no way we can sustain all this.
But people are gonna recklessly breed no matter what, because the diffusion of responsibility is so great that there will never be any concentrated effort to fix things. Our generation is gonna reap all the benefits of this shit, too. Yay