The compulsion of railways goes beyong the visuals now. The history of how railways evolved in teh UK is a fascination, and a more complex subject than most other historical events. Over the years I've consumed volumes of railway history, and still enjoy watching You Tube presentations. I suppose having all my relatives working for the railway was a big component. Had railways not been in serious decline when I left school, I might have ended up on the engineering side and that would have been a very different life.
The Kingswear branch wqas designed to main line standards, which alows the heavy stuff to get there. I still remember the old track layout with turntable, and a DMU service when I was there as a kid.