If

[Davka]

First off, I'm not interested in purposely injuring myself. Second, you still making the same argument-from-ignorance fallacy. You have to show that the brain cannot do it. You haven't not done so.

After a million or so years that man is man i never heard of anyone who under normal circumstances doesn't feel pain when they got hurt but again maybe in the next million years someone may not feel any pain so i will let you know.

"I never heard of it" is the TEXTBOOK Argument From Ignorance.

Here, read this. You won't be ignorant any more:

Study Gives First Glimpse Of Human
Brain's Natural Painkiller System In Action

All you have to do in order to see whether this physical-mental dimension bring or not peace of mind is whether it give a sense of total satisfaction or not.

Irrelevant. Subjective experience is evidence of nothing you are claiming. Lots of things can give a "sense of total satisfaction." Or "peace of mind." This tells us nothing about the mind-body-consciousness question. All it tells us is that certain chemicals in the brain produce euphoric states.