Great hobby (I really mean that... my wife and I grow, process, and preserve a significant portion of our own produce in our front lawn), but ultimately, these are only marginally less wasteful than lawns. The distribution costs (environmental and otherwise) of having many small farms easily overpowers the current situation, which allows for more efficiency. Plus, it takes quite a bit of intense effort to farm enough…
meat is pound for pound more efficient at energy storage for humans Citation definitely needed here. Meat is an extremely inefficient vehicle for getting calories into humans.
The other side of the equation is it takes way more energy per calorie to produce.