Its really up to you, and how bad you're teeth are. I've had them now for just under 4 years with another 2-3 to go and I would say it was a good decision. I had teeth growing in over other ones, ones coming in backwards, my top teeth were on a slant, i had an overbite and my teeth came no where near being lined up. Obviously from those pictures you're situation doesn't look anywhere as bad as mine was. It sucks when you have them, but when my teeth are fucking pimp, it'll be completely worth it. If you do get them however, make sure you do what you're told to, i.e. wear elastics as much as you can or whatever else they make you wear. It will make it go faster. If you're worried about you're age, well i guess my question would be why? Some one might make fun? Who the fuck cares what other people think cause you know what the end result is going to be. I'd so go for it.