I am no train modeller myself. Yes, as a kid I had a train set. But watching trains go round and round and occasionally changing the points never really excited me. Plus, being army barmy, I was always more interested in tanks and soldiers.
But I certainly was a modeller. Airfix planes hung from my ceiling. Tamiya 1/35 scale tanks and soldiers covered my bedroom window ledges. Endless hours were spent painting up armies of 20mm WWII and 25mm Napoleonics - far more time than I ever actually spent using them. (These days it is the other way round - I get a wargame in about once a week, but almost never paint anything any more.)
So I have a strong appreciation of the modeller's skill and art. Model trains, model villages, model aircraft, model anything. To the extent that when I visited the Boston Museum of Fine Arts one time, one of my favourite exhibits was - the architect's model of the museum. And at Le Mans, yes, the cars and other 'real' exhibits are very impressive and remarkable - but I also loved the dioramas of the grandstand down the decades, and the cases full of models of the cars. Same at Waterford Medieval Museum, or the ethnographic museum in Seoul, and so on and so forth.
What is it about miniature models that is so appealing? It's not just the craftsmanship. There are plenty of other crafts whose artifacts don't excite me at all. I have a suspicion that it is something to do with having a mind that has always been constantly struggling to make sense of the world by constructing abstract models in my head of how it operates. Seeing physical manifestations of such mental models is therefore necessarily fascinating.
Well, that's my best theory so far, anyway. Alternative suggestions welcome.