First of all, it's in winter, my favorite season (because of snow and the cold, which I function better in than the heat). Second, marketing bullshit aside (and the fact that people try to push this shit to start earlier than it's supposed to), Christmas is supposed to be a happy time, a season for giving and spending time with loved ones.
Also the smell of pine and the decorations + lights look awesome! At my past jobs, I always decorated my cubicle/office, lights included.
I picked my birthday becasue I can spend a day or week spoiling myself and not feeling like an asshole for doing so. Also calories eaten on your birthday don't count, it's science.
After that would be Halloween becasue everything is spoopy and I can eat candy and watch Dracula movies all day (I mean, I could do that any day). It was my favorite holiday as a kid so I like to go the extra mile and give out good candy for the kids who come by, along with spider rings and other neat goodies. I also loooove carving pumpkins.
Christmas becasue of all the tasty food and treats and the old family tradition of shit-talking relatives we don't like. That was a favorite holiday of mine as a kid but it stressed out my mom a lot, so in recent years I try to take charge of as much of the Christmassing as possible. I'm happy to do all the cooking and let my mom sit on the couch eating fudge and watching...well, we watch Dracula movies on Christmas too.
Christmas because it's the time of year I get to go visit my dad, my stepmom and the rest of my dad's side of the family. We live on opposite sides of the country and I don't get to fly out and visit as often as I'd like. This time of year means a lot to me for that alone.
every birthday i go pound on the door of one of my neighbors houses and demand to take a shit in their bathroom. i prove to them its my birthday by showing them my drivers license and they always say yes and then i go take the nastiest shit in their toilet. its my little present to myself