That’s also the name of an album I like.
Anyway. Here is why most ex-vegetarians went back to meat eating: declining health!
I do struggle a bit sometimes when I see someone eating in a way which can be compromising their health (sometimes a lot). While it is possible to apply the sort of principles I espouse to a vegetarian diet to some degree, I’d be lying if I said I thought such a diet is likely to be as good for health as a more omnivorous one.