There is no war on Christmas. If there was, the radios wouldn't be polluted with Christmas music from 70 years ago, there would be no Santas in the mall, the TVs wouldn't be showing saccharine Christmas movies (and 24 hours of A Christmas Story), there wouldn't be any giant Christmas trees in town squares, there wouldn't be any nativity reenactments at church, and there would be no Black Friday with people fighting over ridiculously overpriced fad toys. If anything, Christmas is shoved in everyone's face during December (and stores are often shoving it in your face even before Halloween is over). My city's already had Christmas decorations for weeks.
But, being a Muslim, Christmas is just another day of the year for me. My family just does their usual thing. Although I do give presents to my Christian friends on Christmas. Most Muslims I know aren't offended when people wish them a Merry Christmas. I'm not offended when people wish me a Merry Christmas, and I like it when my Christian friends give me presents. I have atheist friends who celebrate Christmas. People need to stop being so easily offended.
Despite my complaints, I actually like Christmas - I just don't like the Christmas commercialisation that seems to worsen every year. It really brings out the dark side of human nature.
Also, Christmas technically isn't Jesus' birthday. Jesus was probably born in March or April.