I just spent the last month learning to build EarthShip homes from the human waste stream. Not perfect but heading in the right direction as they generate all their own power.

You make great points about exploitation that we all benefit from.

As for plants, I think it’s possible, however raising animals requires even more plants to be killed.

And I’m not sure plants experience pain the way animals do. And if I had to choose, it seems animals are more capable of experiencing pain and suffering.