A slightly different perspective. When there's a model train show, you get model railroaders. When you do a show in a mall, you get the general public. You'd be surprised what the general public DOESN'T KNOW about model railroading !
In most cases, I hear,"I thought model trains ran around the Christmas tree", and, "I had no idea there was SO MUCH involved in model trains". Oh, I do, occasionally, hear "cute".
I suspect, that most people who think we're crazy, haven't seen a real layout. (on the other hand, maybe they have!).
Those who question the cost of the hobby? I usually ask them what they have after 10 visits to their favorite golf course, and then explain that the loco they see running, probably cost about the same as their 10 visits.
Now, if I could only get this funny coat untied................