I am in a similar situation as you, cept im in 2nd year and my list of "friends" wears thing.
The strangest thing after reading this thread though lol is of all the societies I joined last year Fencing is the one ive found myself coming back to this year..in fact as i type this im just after coming home from it. And the strangest thing was I actually had fun, and interacted more with people unlike I did last year. Ive adopted this mindset where Im so far out of the loop that no matter what I do I cant really get much further out of it, and in the end tonight I came away, not exactly with friends but a satisfied feeling that I at least interacted with newer people, and hopefully over time that will grow....Im no expert lol but go with the fencing suggestion, if anything at least its a killer workout in itself *falls asleep*