Is it weird that I've never had a boyfriend even though I'm 22?

I don't think it's weird. It's better to take your time than to rush into a relationship. Many people who end up in a relationship at a young age (or any age, really) aren't truly as happy as they seem. Those people you mentioned who seem like they have their romantic lives all figured out might be less happy with each other than they want others to know. So please don't feel like you're weird just for not being in a relationship. Also, I don't know you personally, but I doubt you are really that bad. Everyone is their own harshest critic and I'm sure you have more good qualities than you think.