I had to pause and scan for Troll when I read the OP....
It's milk and eggs *****!
Anyway, nicely placed Scott Pilgrim references aside, I'm friends with someone who's very much into this kind of thing, and seemingly because they've allergies coming out of their ears.
Mostly dairy related, I believe.
While I'm open to having the odd vegetarian dish here and there... I need my meat.
On the flip side, a buddy's girlfriend is just vegetarian... And seems to have absolutely no energy and seems incredibly crabby whenever she's clearly having another craving for meat....
No! Not that way! lol!
As in, eyeing up that Big Mac (ha! That's not realy food, who am I kidding?) something fierce.
I think if you need to, fine, knock yourself out.
I'm an omnivore and proud, though. The human body evolved that way, I like meat, although I do prefer that the animals I end up eating the meat of are raised in free range, non battery caged environments.
If my dog was forced to eat nothing but vegetable based food I'm sure that'd seriously damage his health.
It's not an easy life style choice so I'd encourage/implore anyone do to their research properly first.