To share my own present experience, I'm still in college myself and working with nearly all of my free time on various projects of my own, summers included. In contrast to you, though, I've kept up fairly well with the things going on outside of my own world (please note this is not a knock on you). While I haven't heard quite the same things you have, I've definitely heard some fairly awful stories about what people get themselves up to with too much time and not enough to do.
Even now, I can appreciate the concept that in the future, I'll already have a significant amount of experience to rely on when I may have to address a specific problem. Undoubtedly, it may be a little lonelier while you're working your ass off to get ahead, but it also doesn't mean that a person has to be totally isolated -- I still have a circle of friends, and go out on a regular basis. I just may do it less often than a person who isn't working quite as hard.