I've made many. Some I can look back on and laugh (don't worry, I don't have a misspelled tattoo), but others still make my stomach twist with regret. Even so, I know that I'm a more interesting person because of them: more compassionate, more understanding, more... human.
And what would the characters in our stories be if we didn't allow them to make mistakes too? Boring! I don't want to read about someone who's perfect. I want to watch them falter and mess up, time and again, just the way I have. I want to watch them fall because when they finally do lift themselves up, I'll believe that they're like me, and I'll know that there's a bit of redemption waiting for all of us.