User blog comment:FossilsDaDaDa/A crazy idea of mine/@comment-3473686-20110924163645/@comment-3319309-20110924202328

It'd be bad if you had feeling in your brain. First, like Fossy said, they keep you awake during brain surgery. It's to make sure that they don't accidentally hit a very important part in your brain. Second, everytime your brain hits your skull (which happens more than you'd think) you'd feel an extreme amount of pain.