I hear you dude. I miss college a lot. Life was very easy back then. I had no money but a lot more fun. From 4 yrs of college, I only keep in touch with one friend and thats only sporadically. People change, I suppose thats life.
If I could, I'd be 21 again, for ever. It was the best year of my life for many, many reasons.
Enjoy the last few days.
-edit- I finished college in '96.