I feel a large part of the problem is, very few modelers have seen an actual non-fantrip steam locomotive at work. At 74 years on this planet, my memories of steam are only featureless, dark masses. Oh sure there’s fantrip steam. They too are part of the problem, as I see it. Want a shocker? Ask the younger crowd, "How many of you have ever seen a diesel without ditch lights? A Baldwin or, Lima-Hamilton diesel? If they look at you as if you just sprouted a third eye, don’t be shocked!
People have trouble developing in interest in something they have never seen. For instance, my daughter is a knowledgable railfan. She is a middle-aged wife, and mother of two 20 somethings, so she’s not a kid. We were talking railroading one day and I asked her about her major interests in railroading. Her answer was the Southern Pacific, before Golden West Services came about, before the Gyralights were removed and before the diesels were “lobotomized”, before speed lettering, and there was a caboose on every train. No conspicuity stripes, no wide noses and no d----- ditch lights! I then asked her about steam. “Oh ,its nice but I never saw it in real life, I prefer diesels.” SP , 1981, in common English.
It is not about the complexity of the model, variety of wheel arrangements, price, or any of those things. The main problem is, most people born after 1950, have never experienced, nor do they vivdly remember an honest, work-a-day, steam locomotive in revenue service. Notice I didn’t include the fan-trip queens, tourist haulers, or even the stuffed and mounted guardians of so many municipal parks.
Just like you don’t see horse drawn stagecoaches, or open cockpit bi-planes every day, steam has become an “event”, somewhat similar to the circus coming to town. People go, ga