Is it normal that i don't want to have friends?

Hello,I'm 17 years old girl.I'm living together with my mum and with her I'm spending most of my time (usually 4 hours per day) I'm spending so much time with my mum because she is only one person who understands me almost completely and with who I have very very much common. For example we are both very calm,we both don't need friends and also our thinkings are very similar,we both like to philosophize every day or sometimes to talk about policy and global problems. So that's why I can't fit to my aged people because they aren't interested in such things like me and my mum.My aged people mostly care only about fashion,cars,friends,parties,sports....And that's why I can't find common topic about what to talk,so that's why every time when I'm talking to my-aged people I feel anxious because I don't have what to say..Of course sometimes they're making laugh of me too because I'm too weird to them..They usually want to talk to me only for having fun (I mean for laughing nothing more) they don't take anything seriously what I'm saying,everything what I say sounds funny to them but not for me...I know that lot of you will say that I should relax and to look to everything much easier and with humor sense..So I hope that here I will find someone else with common problem like mine.