What do you think of young people (teenagers) learning how to box?

Do you thing that boxing would encourage them to be violent, or that it would be excellent for self-discipline and confidence?What do you think of young people (teenagers) learning how to box?
the latter, how often do you hear about a boxer getting into a street fight. Don't get me wrong there has been a few (tyson) that have, but the majority doesn't. i box when i was young (golden gloves twice) i didn't get into a lot of fights, but the fights i did have was for self defense only. the reason i won these fights was because of my boxing skills. this is a good tool for teaching self defense and discipline...