Even Fiction Can Be Heartwarming
Even if you don't believe that Jesus is God become man, or that he died for your sins, or that his mother was immaculately conceived or that Jesus is God, the one thing that is undeniable -- Jesus is a historical figure. Of course one could deny it but then you would have to deny the the reality of other historical figures who have less historical evidence. But then again people who reject Christianity or the work of Jesus use a different logic than others or even the basis on which they hold their own beliefs.
If anything I have learned about people is that they will either follow or walk away from Jesus. There isn't any middle ground. It doesn't surprise me that there are those who reject the message of the gospel. Even Jesus, who lived, taught, and performed miracles was rejected by people. I don't take it personally; they aren't rejecting me, and their rejection of Jesus doesn't affect my beliefs or my eternal destiny. It is sad, though that their hearts are darkened at a time when the light of the world came so that all of us could come to know God through the forgiveness of our sins.
That's what Christmas is all about.