If we listened to those same animal rights groups, we would not have many animals left. Benign neglect is not benign in the long run.
Oh, and give up on milk, cheese and other dairy products. Oh, we cannot forget about chicken eggs! Well shit! There just went half the grocery store! NO meat, dairy, or eggs. Crap now what do we feed our pets? Oh, right, we don't! We have set them free. They are now independent contractors or something.
Say, doesn't evolution say that something will come along to make use of the GHG's?
Why wait for environmental damge to reduce the population, just keep electing Democrats to power! They have found a sure fire way to decimate the population.