I have to wear them. But it can be fun if you find frames or a style you really like. I tend to pick outrageous colors, and they've been conversation starters at the hair salon, airport, etc.
I do but I hate glasses. I can't use contacts because I'm bad with things like that. My eyes are really bad too. I've used my Mangekyo Sharingan too much, I'll need to use my "spare" soon.