As soon as someone finds out you’re an atheist, the questions start coming. These are MY thoughts, not the thoughts of all atheists.

Why do atheists celebrate Christmas? Although some celebrate Christmas by attending a church service, Christmas is not a religious holiday. In addition, Santa, presents and decorations are new traditions that evolved in the past several hundred years. Therefore, it is actually hypocritical for Christians to celebrate Christmas with anything besides a meal and prayer. No gifts, no Santa, no mistletoe.

Live Science History of Christmas

National Geographic History of Santa