For those of us who were always paid to do their hobby, 'work' is never a burden. I've just turned 60, so sadly no more single-pilot public-transport for me - I really miss the police, air-ambo and lighthouse support stuff.
However, after a brief (2 year) interlude with my previous (excellent) employer in their training office, teaching multi-engine and IR, I have now found my way into my ideal way of life. Mon-Fri, starting at 9 and never finishing after 5 (unless massive amounts of overtime are paid), I get paid for flying modern light twin helis at <30 feet around the delightful UK countryside. Managed 4 hours 50 minutes today - no paperwork, no secondary duties - bliss!
Who needs to retire when you can have this much fun and have people throw money at you?