I felt the same way as you, but I recommend you go. Proms don't happen a lot in your life, so even if you don't like it, it's not like you have to do go to one everyday. Not to sound like my (or your) parents, but I think if you don't go you'll regret it later. If you're scared about dancing take a couple shots before you go lol. Just kidding, don't. Trust me man, if you go you will only have positive memories.