It's up to you, obviously, but I think your teeth add a bit of character.
I had one bugger that stuck out and it was never a problem until my thirties when everything started moving. I had two taken out when I was a kid because of "overcrowding" (current dentist says that it was in fact, unnecessary!) so there's room for them to move. It started to stick out more and other teeth began to move too, so I had invisalign done.
The treatment was a bit of a pain but fine all in all. My issue now is that although my teeth look better and I don't feel self-conscious smiling anymore, they don't fit together anymore! My bite isn't right and salad, apple skin, rice etc are quite a problem to chew.
I've got the fixed wire retainer and have had it for 6 months. My dentist said my teeth/bite would shift slightly to accommodate it, but it hasn't. I've had it altered once and will try again but I get the feeling I'm going to have to get it taken off and wear a plastic one at night. I wear a guard at night anyway, so that wouldn't be a problem but I'm worried that without a constant tether, they will start to move again during the day, seeing as they moved an awful lot in the last few years and they have the room to.
The one thing I was warned about when I started was that the roots could be affected and it seems to me that if they were able to move quite a bit during the day (remember I would be pushing them back into my normal bite every time I ate), and then corrected back every night, that the roots would have no time to settle and there would be a knock-on effect. I may be being over-anxious about it, but I don't want my teeth deteriorating faster than normal because of this procedure.
Everyone will have different experiences, this is just mine, but I would advise that you talk specifically about your after-treatment plan and how your bite will be affected.