When we are young, we run together as a group more. As guys we tended to both grow apart and be at different points as most of my friends were older. I was turning 18 when they were turning 21. When I was turning 21, most were having kids/renting etc. At 22, I was the second one to buy a home and that floored several of them. At around 25, several were moving away, due to jobs/careers and such. Since that time, normally if I get together with someone, it is because help is needed, moving or building something. "Friends" now, are more acquaintances/coworkers, etc. I am the one out of the group who isn't on FB, so I am not in touch with any of the old gang now.
I ran into someone that when we were young, there were three of us that ran together and that was my main group of friends. The two of them had been friends longer (since early childhood), I came into the group at around 10. I had not seen either since 18, when one was going off to join the military and self destructed that (started into drugs before drug testing). His family was always opposites (cop father, drug/alcoholic mother). The other lived in a different area, so I didn't see him as often. They had a falling out as the self destructive one, accused his buddy of sleeping with his wife and ruining his marriage. Haven't seen the other. Life just leads us to different circles.