I can confirm that they exist. One of my friends from work has been collecting Star Wars figurines and ships and has recreated entire scenes in his basement. His whole basement.
Well..until a STAR WARS fan shows up to court, to serve on a jury dressed like OBE WAN or Darth Vader, Trekfans still own the 'nerd' crown in opinion...and is okay..nothing bad with being the nerdy fanbase.
But hopefully with XI pulling new fans (and it is) maybe the average age a Trekfan has sex for the first time will finally go below 40 years of age...WINK WINK
Rob