tmac said"Jiro Dreams of Sushi" that documentary is definitely the exception to that rule
Got your good point as certainly there are some who find or fall into what they love or learn to live that for life and while I did not spell that out, as my response was not meant to be comprehensive but targeted towards what seemed the OP's frustration, a feeling I've known myself, I did attempt to properly qualify my statements by saying things like "neither is everyone", "a few burn out" in recognition of those either dedicated to or settled into their work, often referred to as their "life's work." And often they are exceptional. You are right to spell that out.
Yet one of the most exceptional people in my life was an exception to the exception to the rule, a guy who had numerous successful careers over the course of his life starting as a freedom fighter against the Perons, even locked into solitary confinement then, to teacher, to I think it was dentist or doctor back to teacher and eventually a shrink. Died in his 80s while still in practice. Super smart, dedicated guy.
So I think either route can be satisfying, even the frustrating one. A lot of life is setting your mind right.
"Outward circumstances are no substitute for inner experience."--C.G. Jung
The job can be anything. What matters is what's in your mind.
Jiro Ono: "I've never once hated this job. I fell in love with my work and gave my life to it. Even though I'm eighty five years old, I don't feel like retiring. That's how I feel