Because it has Christ in the name and is generally a happy time?
No, but in a way, yes. I couldn't care less that it has Christ in the name, but everyone's attempt at being so god damned jolly makes me sick. Christmas also reminds me and everyone else in my family of just how poor we are, not to say we dwell on possessions; we just get kind of pissed off when we remember that we used to have money and everyone outside of the family is buying their stuff faced kids PS3s and 42" flat screen TVs.
Christmas isn't a happy time of the year, it's the time of the year where everyone pretends they're happy and feel bad when they can't afford to throw their cash at everyone.