Most of the traditions upheld by Christians date back far, far before Christianity and have been worked to suit. Easter for example. The introduction of Christianity was really a political move.
If you are interested in where the tradtitions come from look further back. I treat this as a historical thing, so you can't offend me!

I celebrate the changes of the seasons in small ways but my main celebration is Christmas not for religious purposes but I get to see my entire family under one roof for 2 days!

I like to hear about others traditions too.