Yes, you are the only one.Am I the only one who goes to the show and doesn't care about new bikes? If I wanted to see new bikes I'd go to a dealer.
I want to see the stuff dealers don't have. Vintage, customs, race bikes and other one off stuff. I'm often just looking for ideas and neat trick bits that I can steal or mimic.
Just kidding. I also go primarily for the other stuff you mentioned. One year there was a particularly nice Norton Commando in the vintage area. I spent a lot of time at that bike, taking pictures of various things like front brake line routing and other stuff as the owner had fitted lower bars and was able to use the stock lever/reservoir. He had also re-located the horn, and ignition.
Honestly, the pics took and noted I made after looking over that bike was worth the admission or at least left me VERY satisfied that I had gone to the show.