Are friends overrated?

I'm 17. I consider myself more independent than most people, but there is a part of me that feels lonely and wishes I had someone to accompany me through life. Most of my life I've had no friends. I had only one best friend when I was a child. We seldom talk to each other anymore because our relationship now that we are older is not the same. I can't seem to get close to anyone. There is a point in all of my relationships where, after we get past all the "get to know you" questions and become somewhat acquainted, I feel like I just want to be by myself again. It's very strange. I feel like I have no use for friends, yet the idea of having friends to me seems delightful. I'm worried I'll never get married or experience true friendship because of this. Are friends for everyone?