I can understand how these things seem very important in school when people are insecure and establishing the order. You are still young and haven't had the experiences to teach you otherwise so no wonder school life influences your self image as it does.

I can't agree that height makes a man a man, it's not my perspective at all. I'm a woman and shorter than you, I have always preferred men nearer my height, they feel a good physical fit.

But that said, I do understand this is how you feel about yourself, and I share this unfortunate trait of negative self talk. What would it take to help you feel better about yourself? Staying in front of a computer is no good for anyone, tall or short, male or female. Think about what you CAN do, not what you can't - self sabotage will only hurt yourself.