The Reversal of Fortune star insists he'd quit tomorrow if he ever started struggling to remember his lines - but he's still keen to act as long as he doesn't have to travel far from his home in Ireland.
Irons tells the Globe, "I just don't like the stuff around it (acting). I don't want to travel the world anymore. I just want to stay home, go sailing and ride my horse.
"I'd like to think that I would want to work less and less (as I get older)."