I wonder sometimes if I'll (have to) do the same. That's what the wisdom says...that most of us will eventually have to move up to a larger scale in time if we still want to play with trains.
So far, though, I seem to be able to cope. I just make sure the ambient light is good and bright, and doesn't leave too much in shadow. I can still reach deep into a layout and re-rail some items in HO.