We never told our kids that Santa or the Easter Bunny is real. It seems a lot easier that way. I was brought up in a Christian home and my parents never had us "believe" in those things, either. I don't feel like I missed out on anything. One thing I heard once is that if we tell our children these things are real, when they come to find out that we lied to them, are they going to thing we're making Jesus up, too? Of course, this idea really only matters to those that believe in God and want their children to as well.