Erik,
I can relate to your assumption about older people moving to larger scales. I was in my late 20’s when I got into HO scale. Less than a year after I started buying HO equipment, I was buying some used trains from a long time HO-Scale modeler online, who was selling all his HO trains to move into O-Scale / O-Gauge. According to this person it was getting harder for him to see the finer details in the smaller models & his eyesight was limiting him in handling the smaller models. It then dawned on me that I could end up like him someday. Since I had been in the hobby for a much shorter time I decided to move into O-Scale before I spent a lot in HO. Fortunately, I had visited P&D Hobby in MI when I was in HO & knew that they had a good selection of 2-rail & intermodal equipment. Pat was also helpful in directing me to the models of newer equipment that I favored.
These are just my opinion,
Thanks,
Naveen Rajan
Hahahha