As a family, we are still in the process of refining our holiday traditions. Sheldon was raised Jewish and I was raised celebrating all the of the Christian holidays (though my parents weren't religious... atheist, in fact). So, we are still trying to find our footing when it comes to the many holidays we each grew up celebrating.
Last year, we didn't put up a tree. Then I cried. So, this year, the tree is back (as are other Christmas festivities along with it!). We are not a religious family, but that doesn't take away from our need for traditions that celebrate the seasons and our desire to carry on rituals we remember so fondly from our own childhoods.
All I know is that I really like our Christmas tree and we really had a lot of fun decorating it as a family. I'm not sure how our traditions will evolve in the future, but I know that this is what works for us now. And I'm ok with that.