This is what gets me about mountain climbing - you can't really be good at it, at least not in the sense that it will save your life. There are so many unknowable, uncontrollable factors that make the difference between life and death, to the extent that you play Russian Roulette with each climb, the only reward being a spectacular view.
I saw Touching the Void (recommended) a few months ago and it described how on one occasion two climbers basically climbed onto a snow overhang and when it broke it was too late to do anything about it. There was no way to know that they were heading onto an overhang at the time, it looked solid as anything else. This is not a skills-based discipline, just crazy gambling. I don't get it.