Shadowland wrote:
>
> And just why do people need meat anyhow once their done growing ?

Meat is the richest source of carnonutrients,
some of which like vitamin B-12 are essential
for human life. There are no reliable vegetarian
sources of B-12, except B-12 made from selected
strains of bacteria.

Other carnonutrients such as creatine are not
essential, but have been proposed to enhance
some aspects of health such as athletic
performance.