Not that I don't think it's a stupid idea, but animal rearing is an extremely inefficient form of agriculture, due to land use, trophic levels and etc. If anything we need to kill less animals ifbwe are go be serious about feeding the world's poor.
Meat grown in vats will let us eat meat sustainably. Hopefully people get over the initial squick over the idea.
As for views furthest from the mainstream, I recall around half the social liberals here supporting legal polygamy (not including myself). That would be out of the mainstream, although I doubt it would be a priority for any of them.
