I once thought that coke wasn’t as good as coffee as a stimulant. It’s great as a pain killer and because of that, it should be able to reduce psychological pain, too, but it has a secondary, more subtle (at first) effect. When I was able to do an effectively unlimited amount of the stuff, it removed some blocks I didn’t know I had and turned me into a true sociopath.
It opened a window into into a place that even I think is very, very bad. I haven’t done coke since then, and won’t again.