This is pretty "normal" I would guess. In my experience and the fact I have moved every three years since birth (gypsy grandmother) I have not had to many long term friendship/bonds. I do have a good friend that I use to build cars with but we went separate ways. He has a kid and is now a cop in a town in NC where I use to live in. People just grow up and find different interest. Everyone experiences life differently. I have been living in SF for 2 years and still have yet to find a close buddy/buddies. I am a little bit of an introvert for I assume moving around so much.