When we were young we all pushed the envelope a bit, but we all left some margin for error. Even if it wasn't a very wide margin. There was always a point we wouldn't go beyond.
But there were some (and usually they had very little skill) who were just totally insane. They'd do anything, anywhere with no second thought as to their, or anybody else's safety.
Whether they were just stupid, or they had a death wish, or both.......I'm not sure. But not many of them (if any) lived to a ripe old age.