One problem is that that experience lull you into a false sense of security. I'm not talking arrogance or so. Merely that you can do something everyday that's unsafe and get away with it, training you on bad data to think it's safe.
Like avalanches. Certain conditions are met. You go out. Everything is fine. Same the other times. You learn that it's safe. Suddenly an avalanche happen with those exact conditions. It was just arbitrary it didn't happen the other times.