Am I Crazy?

Anyone else out there feel like they're crazy for wanting to do relationships the "old fashioned" way? 😔 I'm all for casual sex/hook ups/whatever. Really, I believe you should do whatever makes you happy. But whenever I tell a guy, or any of my friends that I just want to take things slow, date for awhile, get married, then have kids, they look at me like I'm insane, or tell me I'm boring, or even that I don't know how relationships work. I don't necessarily want to wait till marriage to have sex (I've had casual hook ups before) but I at least want to be in a serious relationship with a promising future. I just want a guy who has the same kind of mentality, but I feel like they're so rare. Especially college-aged guys. I'm starting to worry I'll be alone forever. My 14 year old sister has probably had triple the number of boyfriends that I have, and I'm a junior in college. I feel like I'm doing everything wrong. Sorry, just needed to vent. 😕