Here's why I, as a Christian, intentionally say "Happy Holidays"...

We no longer live in a provincial land where one culture or religion dominates and dictates. The reality is that the world is becoming more diverse and mixed and multicultural. It's a beautiful thing; not a reason to retreat into monocultural ghettos. The more I learn about other faiths and other cultures the more I appreciate them and my own as pieces of a wonderful mosaic of human aspiration. 

My neighbors come from various Asian backgrounds, are African-American, are Middle Eastern, originate from south of the border, emigrated from India, are Native American, and--like me--are descended from European immigrants. We're all in this together.

So I respect their holy days and appreciate when they respect mine.

Here are some of the holy days, in addition to the various Christian ones, which occur in December and January:

Ashura (Sunni Muslim)
Bodhi Day (Buddhist)
Pancha Ganapati (Hindu)
Saturnalia (Pagan)
Yule (Scandinavian/Pagan)
Winter Solstice (Pagan)
Hanukkah (Jewish)
Kwanzaa (African-American)
Guru Gobindh Singh’s Birthday (Sikh)
Lunar New Year (Asian)
Eid Milad UnNabi (Islam)
Sadeh (Zoroastrian/Persian)
Chahar Shanbeth Suri (Zoroastrian/Persian)
Gantan Sai/Shogatu (Shinto)
Magahi (Sikh)
Makar Sankranti (Hindu)

-DC