If I want a "high" that also have a chance of killing me, I'd just skyjump. Greater odds of making it back alive and if I didn't, then at least I didn't spend an enormous amount killing my self.
I had no idea so many were climbing Everest until I saw the pics on the news this weekend. The average amount of time to complete the expedition is 7-9 weeks, costs @ $30-50k, and there's a 1-in-10 chance of dying on the way down. I think I'll pass...
It can get so bad that some corpses are just allowed to stay there and not retrieved. New offerings to the gods, I mean hikers, even use them as trail marks.