I'd Rather Have A Few Close Friends Than Many Acquaintances

I don't get how people can be able to have hundreds of friends... Most of the people I know are somewhere between acquaintances and friends. And there is a smaller group that I consider friends. But of the many friends I do have, only about four are really good friends... I just hope that they realize that special affinity I have for those particular friends, not because I am someone special or important or something, but because I truly care for them no matter what.
The interesting thing, at least to me, is that of those close friends almost all are girls, despite me being a guy. It seems as though of the people I come in contact with only the women in my life enjoy what I enjoy as well- namely, Lord of the Rings and similar fantasy books, movies, etc. Also when I was younger it was very hard for me to make friends, so I kind of followed my sister (who was much more extroverted) and she was the icebreaker more or less... And of course most of her friends were girls. So as a result I feel a lot more comfortable around girls than guys and starting friendships with them.