If I never made mistakes, I guess I would probably be very arrogant and, unforgiving and not at all understanding to people who make mistakes. On hindsight, life would be kinda boring without a few mistakes. I think though, that there are some mistakes that are fatal and will ruin your entire life if you make them. Maybe trotting through life making small mistakes here and there, and learning from them kinda prevents one from making one huge life ruining mistake.