I feel the exact same way, I have hated them since I was really little. I hate all of attention, and I feel rude on them, not to mention obligated just as you feel. I feel guilty because I have trouble saying things like "Thank you", but I don't know why. It has always been hard for me to say stuff like that, and it makes me mad. Also, I don't let ANYONE sing to me on my birthday, I hate it. Pushing aside the negative thoughts, happy birthday! I really hope you are able to enjoy it, have fun!