20 years ago, I had an HO scale layout, but I can't really say I was very active on it. Since the mid-'90s, my 4x12' HO layout had largely gathered dust most of the time, mainly due to my disappointment in not being able to run the long autoracks and TOFC flats on my 18" radius curves. I quit HO in 2006 and sold nearly all of it to switch to N scale, which I've been into since. In HO, there would be years of inactivity in the hobby, but as an N scaler, the inactivity hardly lasts mote than 2 months max. Though my N layout is smaller (4x8'), I have more trains than I did in HO and enjoy the hobby much more thanks to the radius no longer being an issue (still 18" radius, but it's a different story in N). Also, DCC and more room for scenery has made it more of a joy. HO is still king, but I believe even the notoriously HO-centric Model Railroader magazine acknowledged in an article on the industry a couple years ago that N scale is the fastest-growing scale.