Sunday Asides #105 The first Avengers: Doomsday trailer dropped earlier this week, and the Marvel fandom reaction has ranged from mixed to terrible. I'm not excited about it mainly because Marvel movies have been on a steady decline over the last five years, but it could also be because I'm 45 and just not that into all this Marvel shit anymore. (Granted, X-Men '97 is still really damn good, even…