I always thought being a total vegetarian was bad for you, can't remember exactly why now, but isn't there some necessary nutrients only found in meat? Anyways, I'm omnivorous, but I have nothing against vegetarians, it's your choice to be perfectly honest.
I tried to make my Slog a vegetarian by taking it's Scrab leg away and replacing it with a Spooce shrub, but it ate a nearby Mudokon instead, so I gave up.