You hear about people who retire and die six months later from boredom.
Don't think I've ever met a model rail in risk for that. Most MR's can't wait until retirement so they'll have more time to spend workin' on the railroad.
Probably the best part of this hobby is that there are so many aspects of it: Research, planning, building rolling stock, building structures and scenery, laying track, operating...... How can anyone involved here really ever get bored?
Bill S