I had braces twice, once when I was in elementary school and once when I was in high school. I've had a malocclusion since I was young, so if I hadn't corrected it, I think it could have been a really bad protruding chin.
I don't regret it, but my teeth have weakened a lot. My teeth are so cold that I can't even eat fruit well.
If your teeth aren't too crooked, I think it's good to just live.