Grad - I don't need meat! A varied balanced diet of everything but meat (and animal bi-products) has kept me very healthy for thirty years now. My immune system is very strong and its at least eight years since I needed to take any time off work due to illness.
I'm getting a bit fed up of the references to teeth - human teeth aren't adapted to do anything in particular. In fact they are a bog standard set of unspecialised gnashers. Tiny canines of no use for tearing anything tougher than the wrapper off a Mars bar and miniscule molars useless for grinding grass. Fortunately most of the plant material we all eat raw does not have silica in its cell walls like grass does so we can cope with it perfectly well and do not need the huge continuously growing molars of grazing animals.
Yes Mooman - you are a folkie and so am I.Unfortunately I'm also a Biology teacher who can't resist the odd lecture spasm!