Ok, I'll guess I'll weigh in.

I'm 21 years old and I haven't had any sort of girlfriend in over 4 years. I've also never even french kissed a girl.

I think way too many people in general get married. At very least you need to wait til you become well adjusted in life and have a reasonable career set up. (this goes for ANY career field, not just airline flying). Personally, I don't think I'll ever be capable of having a girlfriend. I'm more of the loner type, I suppose; one of those people married to their work and their hobbies, etc.