Is becoming a vegetarian/vegan worth it?

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Stefan.De.Machtige said:

I have no plans to try vegan or vegetarian. Meat is just too natural. Your brain itself is even mostly fat.

I'm trying paleo myself for like 80% on week days. 24/7 of it will likely lead to insanity :p.

The brain is mostly fat, but your body can produce the fat it needs.  Ditto cholesterol, you don't need to consume it because the body produces it.  Ditto B12, your body can host the bacteria that make it.

Why would eating the so-called "paleo diet" 24/7 lead to insanity?  I mean, the diet isn't very paleo (fossilized human stool proves as much), but I don't see why it would lead to insanity.  It seems to me that the easiest route to that is eating processed food.  ;)