Christmas was originally meant to be a celebration of the birth of Jesus. Many people still celebrate it for that reason, but even many of us non-believers like Christmas. Who can resist the songs, gifts, and decorations -- not to mention the cookies and other goodies?
I think to popularize atheism, we need to develop a kick-ass holiday just for us. I did a search on Wikipedia for "atheist holiday" and got no matches. Zero. I really think we atheists should have at least one holiday of our very own -- a day of realization that we don't need the mythology of the past to cope in today's world. Though we don't understand how many things work in the universe, it doesn't mean we have to make up gods to explain them.
I personally think this holiday should be February 12, the birthday of Charles Darwin. In fact, there already is a celebration of Darwin's birth called Darwin Day.
According to Wiki, Darwin Day is a recently instituted celebration intended to celebrate the anniversary of the birth of Charles Darwin on February 12, 1809. This year marks the 200th anniversary of Darwin's birth. The day is an opportunity to highlight Darwin's contribution to science and to promote science in general.
Events on Darwin Day have included dinner parties with special recipes for primordial soup, protests with school boards and other governmental bodies, distribution of information by people in ape costumes, lectures and debates, essay and art competitions, concerts, poetry readings, plays, artwork, comedy routines, reenactments of the Scopes Trial, and recreations of the journey of the HMS Beagle, church . The Perth Mint, in Australia will launch a 2009 dated commemorative 1 oz. silver legal tender coin depicting Darwin, young and old, the HMS Beagle, and Darwin's signature.
Darwin day is only a little more than a month away... don't forget to send out your Darwin Day Cards!