I'm a believer in my own things, but I do think that if you're celebrating christmas, it should have some context to christ. I am a jew, but just because it's 'christmas time', I don't spend that day with my extended family. If you celebrate that day, you are participating in a religious ritual. So if you don't agree with the religion, then don't piggy-back it for presents. I spend time with my family on other days than the 25th.