Well, as you already know, I'm a Christian. And yes, I do believe Jesus Christ was born in the manger and that shepherds and wise men visited Him and brought gifts. But here's the thing, I don't believe He was born on that particular day. We have no proof on what His birthday was. And honestly, I don't think God wants us to know or to observe His birthday. He wants us to honor His birth, life, death, and resurrection every first day of the week (Sunday). So we don't call it "Christ"mas, but Gift Day.
Understand what I mean?