Here's my opinion: True "enlightenment", in the context of Buddhism, is knowing that there is no such thing. So you know that you have something that does not actually exist.

Here's the real deal, in a nutshell. The Buddhist monks eat a very limited diet for years. I know, from experience (due to an illness I have that is now in remission) that this makes life very difficult because the body and brain needs nutrition to work well. So, they make-do with their bowls of rice, veggies and other scraps. Notice that the Buddha is always pictured as fat, middle aged, and laughing. How come he's "enlightened"? Because he probably starved himself for 25 fucking years and when his diet improved, so did his brain - and complex thinking processes became a breeze.

I am NOT an expert on Buddhism - but they're usually vegetarians. A certain amount of fish and meat are very beneficial to human beings - and 2 million years of eating this way, and surviving, is proof enough for me that we ARE carnivorous creatures.