I'm another ancient gamer, and I don't have any problem playing a 13 year old. I do, however, have a problem playing someone, regardless of age, that is whiney, trash talks, doesn't keep his mind on the game, or is otherwise annoying. We're all in this hobby for fun, and while I don't mind playing "kids," I do mind babysitting. So understand that when playing an older player, especially someone like myself who is old enough to be your father, you can't always act like you do around your peers at school. I'm not saying you can't be yourself, or have fun, but realize that older people are, well, older. They will (usually) be more reserved and less boisterous than folks your age. Take that into account, and you'll be fine, and older players will be happy to play you.