Trains have long been associated with Christmas.  And although I'm not a model train collector, I do get plenty of "train time" during the holidays by working as a brass caroler at the Strasburg Railroad.  Each weekend I post similar photos with similar captions on my social media pages and you might wonder why anybody would spend so many hours doing something that seems so monotonous.  True, the days are long and unchanging, but they're very satisfying and enjoyable at the same time.  It many ways it…