For me it has to be the fun of Halloween. Unlike decorating for Christmas, you can go all out with your decorations throughout the whole lawn and house, and it wont look to gaudy, like alot of Christmas decorations tend to be. Fall is also my favorite season, perfect weather. And Halloween is just fun, it has such a great atmosphere to it. The cool autumn days, all the different colors of the leaves, and watching scaring movies on TV all throughout October. Its hard to explain, but Halloween is just it, its the holiday.