I also find it unusual if someone has more than a few true friends. I find that the people I would call "acquaintances", other people call "friends".
To me a friend is someone you can call in the middle of the night, under any circumstances and they would drop everything and come running with the bail money in hand!!!
I consider myself blessed to have one true friend that fits this description. We have been friends since kindergarten and even though she lives across the country we know each other inside and out.
I had two other really close friends but have lost touch with one in the past year or so. I am trying to reach out and regain a close relationship with her though because I really miss her.

The third did something that made me see that we are really not on the same path in life. I wish her well but it is okay that we have turned into acquaintances at this point.
I know a few people mentioned that they are not social people but would like to make more friends. I am also a homebody for the most part and fairly introverted. When I went off to college right after HS I forced myself to be more friendly when I met someone I thought might be friend material, and that is how I met my other best friend who I lost touch with. I know how hard it is, but it is worth the effort to force yourself to go out and be friendly if the person seems like your type of person and you have things in common.