Isen't it funny how people change?

I'm home for the summer, and I have begun to notice how much some childhood friends have changed in the past two years, mostly for the worse. One has got pregnant at 18 (unplanned), one tried to kill herself, one is always into trouble with the law and they all have zero aspiration and have limited education. I used to hang around with them when I was younger and we had a great time but when there was a time to grow up and to start thinking outside of our hometown, its seems that non of them cared. It was the same with my older sister's friends (they all got pregnant at a young age, no college) and she's got a degree a living in the city, i'm so proud of her and really respect her for respecting herself. When the girl who tried to kill herself was in hospital, i visited her and told her to give me a call sometime to hang out (trying to support her) because I haven't got to hang out with her because i live somewhere else during college months. Its really awkward now when i see her because we don't hang out. And she doesn't make an effort either so i don't care. I feel bad the way things have turned out..its just I have always been different to them in that I hold education very highly and they dont really care. I have a best friend who lives at home and we both used to hang out with them but not anymore (she's also going to college next year) Its funny....Where I live it sucks sometimes because there is not many people to look up to (they are kind of wasters) and have the same aspirations and things in common, whereas when im in college I click with people more and have waay more in common with them. I have 3 months in my hometown, and I can't wait to go back to college! Anybody else have this problem?? What do ye think I should do..Thanks for reading! :D