They always tried to tell me high school was the best time of your life. I think that was bullshit. In the four plus years I have been out I have enjoyed life more than I did in the four years I was there. The guy I would call my best friend today was a guy who I talked to here and there in high school, but he wasn't more than an acquaintance back then. The people I was good friends with four years ago, I don't talk to now. Yeah I am Facebook friends with them, and we may comment on each others statuses and stuff, but that isn't really a friendship. People change, especially after you graduate, and those who don't really change are probably losers and fuck ups today.
I guess it depends on the type of person you were. I kept to myself a lot, still do, I'm just not a person who enjoys spotlight or attention. My junior year we won state in baseball, I was hurt and didn't play for like two weeks before state, and didn't play during the tournament. I didn't go to the big "We won state" party, partly because I didn't feel I deserved to go(besides not playing at the end of the year, I only started two games all year, played in maybe 17 total) but partly because that isn't really my thing. I spent a lot of time with those guys over four years of playing, and out of basically necessity over not wanting to spend every away game at the end of the bench in the dugout alone, I did make a few friends, but they didn't last, and honestly I'm glad they didn't because they weren't people I really enjoyed, just people who I talked to. I think true friends will last if you make a decent effort. Like J said, it can be hard to properly express how much they do mean to you, short of just coming out and saying, "Hey you mean a lot to me" there isn't a lot you can do...and most of that stuff makes it look like you wanna put it in your friends butt.
I just think that is life though. Maybe it is because I'm a naturally pessimistic person, but life to me is just a series of ass kickings, its up to you to find those moments of joy between them. It isn't always easy, and sometimes it looks bleak as hell. Like right now, three of my four exs are married, and the fourth just moved in with her current boyfriend. One of my former best friends is engaged and his fiance just got a really good nursing job. My other former best friend just gave his girlfriend a promise ring a couple months ago, and he just landed a pretty solid journalist job. Then I look at myself, newly single, can't find a job to save my life, dealing with all sorts of issues in getting my credits to transfer, but despite all that I can come on here and dick around with you guys and its fun. You won't always get to keep friends you want, but you gotta cherish the ones you have while you have them. Most of us here are in our early 20s, I think we are all hitting one of the last big hills of change in life. Before long we are are gonna be that guy we are gonna be the rest of our lives, but we aren't there yet we are still changing and growing and those around us are doing the same and it causes turmoil and it isn't easy or fun to deal with, but the people who really matter will find a way to stick close by.