It seems like this is partly a case of "Never again" vs "Life happens" thinking. A lot of people, when something bad happens, like breaking whatever a downtube

It seems like this is partly a case of "Never again" vs "Life happens" thinking. A lot of people, when something bad happens, like breaking whatever a downtube is, or even a bone, chalk it up to "Life experience" and think it's an acceptable or necessary thing. They say stuff like "Exceed your limits so you know your capabilities". It's similar to the "Drop out of college for a 3 month backpacking trip, learn about life not math". Wheras some people would instead say "I don't need to know my limits. I know where they aren't, and that's enough to avoid going near them". Trouble is, those people don't hang glide in the first place!