This is just a thought that I had. It seems to me that from childhood, we are taught that Christmas is a time for family to get together and celebrate the holidays. I found that on Christmas Day, a lot of people that I knew stayed home and spent time with their family rather than hanging out with friends. This is true to what I just mentioned earlier, but at the same time, it seems that people would rather hang out with their friends instead, and that staying home with family is obligatory. Just an observation.