Is it normal that i don't want a girlfriend at 17?

Hi, I'm a 17 year old introverted guy and I have never had a girlfriend. I've had a crush from when I was probably about 8 years old up until I was 15 or so, sounds sad, but I just never really wanted to try to get closer to her, I just sort of was in love with her from a distance without having any interest in forming a relationship with her. Anyways, I haven't seen her for like three years so I don't really have any feelings for her anymore because I just don't see her everyday so gradually I have started to think less about her so I'm kind of over her. Anyways, I haven't questioned if I'm normal until I went to a new school last fall when I found out that even the nerdiest, most antisocial, ugliest and douchiest guys have had girlfriends before and after going there for a while I am now certain that at least 50% of my classmates are sexually active. Even one guy who looks like an innocent 13 year old apparently as a girlfriend that he is banging on a regular basis and I'm sure he's not lying because I have seen his girlfriend before.

I just don't feel any interest in dating someone even though my parents kind of pressure me into it unintentionally (Well I hope so.) by asking me if I have the hots for someone and stuff like that and my mom has actually asked me if a girl is good looking when we see a commercial on TV together, don't know why she would ask me these things unless she thinks I'm gay or something. It doesn't help that my sister is the most outgoing person in the world who had her first boyfriend when she was 10.

I'm not sure if the fact that most girls I meet are so dumb, shallow and overall annoying contributes to my disinterested in women. There's only one girl in my class that is intellectually similar to myself and she seems nice, but like I have said I wouldn't want to date her. I actually question if the reason why I'm not interested is because my generation is the downfall of society, I can't see anyone around me in class ever becoming something important because they are so ignorant and lazy.

Sorry for rambling, I guess I'm just frustrated that society is almost forcing me to get out there and have sex with everything that moves if I don't want to be labeled a homosexual. I blame the fucking TV.