DD2 has worn them since she was 10. She plays soccer and didn't want sports glasses. She's just started wearing them every day for school this year, because she thought they were too much work and would get frustrated.
She wears monthlies because they don't make dailies in her prescription strength. It took her awhile to get used to putting them in when she first started. It just took practice and patience (which she does not have much of, LOL). She usually makes it the whole month before needing a new pair, but sometimes one gets ripped and she has to get them quicker (same also happens to me occasionally).
mom to DD1 (17), DD2 (14) and DS (9)