Yes to everything you just said, with the added bonus that many people who develop a career around their passion develop a passionate hatred (or worse, boredom)

Yes to everything you just said, with the added bonus that many people who develop a career around their passion develop a passionate hatred (or worse, boredom) for the thing that used to bring them happiness. I would go so far as to consciously try to keep your passions separate from how you pay your bills. Yes, this also applies to porn stars.