I think perhaps retirement should be thought of in terms of trading financial rewards for job satisfaction. Rather than going on holidays for the rest of your life, take a well-earned break, then go and do whatever you love. If you've planned well, you won't need to be paid well at this point, so you don't need to follow the money, just your passion.
Mokalus of Borg
PS - If you've done well for yourself, you can work for the passion earlier.
PPS - If you've been exceptionally lucky, working your passion is how you got set up in the first place.