What's wrong with "Merry Christmas"?

[Carol]

Susan:
> Why don't Christians simply embrace Yule as a pagan holiday, and
wish everyone a blessed Yule? 
> 
> Why insist on imposing your religion and your version of the
holidays on everyone?
>
Carol:

I'm not opposing my religion on anyone. I'm not sure I have one, or
what exactly it is. It's *Christmas* I believe in, with all the joy
and beauty associated with that season and its traditions. I'll take
no offense if you wish me a Blessed Yule and intend none if I wish you
and yours and all the world a Merry Christmas. And if someone wishes
me, say, Happy Kwanzaa, not that that's likely to happen, I'll smile
and say "Same to you," knowing that the intention of the speaker is to
wish me happiness.

Carol, who loves the blend of pagan and Christian traditions that is
Christmas but hates generic anything, whether it's "holiday" for
Christmas, "event" for "sale," or "vehicle" for "car"