Think of it this way: eventually you're going to find that special someone and maybe get married. And you're going to have mandatory days where you hang out with people you really don't want to spend time with, at the cost of not being able to do something you'd rather do. Consider it a duty to your family to attend the function, and suck it up. You won't gain any points for going, but you will surely LOSE points for not going, so it's really up to you if you can afford that hit.