Why do most people scoff that the notion of population control?

I don't how true it actually is or not, but that's not the point. For the sake of the argument, let's say that it is and the candidate question truly does believe in taxing larger families more.

I know that I've also seen other individuals, mostly on social media and message boards, express similar views. Not necessarily about taxes, but usually something similar to what China used to do.

Most people's reactions are that this is insane and the government has no business telling people how many children they can. My initial reaction is the same, but after recently seeing some stories about government sanctioned hunting/trapping of bears and horses, it got me thinking. Most people are generally okay with this, because of your population and had a negative effect on the local ecosystem. Why do we scoff at one, but not the other? There really is no natural predator keeping us in check. We decide that an intervention is needed when certain animal populations grow out of control, but we continue to expand our own stronghold on land. Why are we any different?