[azeotropic]

I'll admit to being wildly inconsistent on this, since I do care about what I perceive as the suffering of some of my favorite individual plants and animals, but not enough about the suffering of plants or animals in general to stop eating them or building things out of wood and leather, or what have you.

I could imagine other alternatives. I knew a fruitarian once (before Notting Hill came out). I suppose you could try and engineer auxotrophy into human cells. I went to a conference once where some people earnestly (but naively) proposed it.