There are very few jobs in the world that pay well
and are fun. If it is your job to keep an airliner full of human lives safe, don't expect to be doing aeros downroute.
Conversely, most jobs that vary on a day-to-day basis are not very well paid. That's certainly true of flying, where a pilot who does a bit of para-dropping, some ferry flying, the odd turbo-prop charter flight, and tests microlights from a pretty grass strip, is not going to be earning much.
Try being a lawyer. A more dull, repetitive, red-tape spoiled job can't be found this side of a government owned stationery factory.
That said, some people love it. But don't expect to earn enough to buy your own little aeroplane, because you won't, unless you spend all your money on flying, want an early divorce and kids who refer to you as 'Mummy's friend'.
When I changed career from law to aviation,
every friend of mine was jealous. And I can assure you all, I wouldn't do any of their jobs for love nor money.