I went vegan six months ago after being exposed to numbers like this and thinking about it a bit. In particular, imagining extending the empathy I felt for my pets to all these other unseen animals that really aren't much different. I thought I'd try it for a week to see how hard it was. It was so easy that I never looked back. These numbers all could be pretty close to zero and we humans would still thrive just as much as we are now, but causing much less suffering to other beings.