If 80,000 sounds like a lot of money, compare that to the price of a house, an assisted living home, medical care, or top college tuition.
in the early 1940's my dad was a simple government employee but earned almost 1/2 the wartime purchase price of our house per year. that same house today is worth over three times my salary as a senior full professor.
the content of dr transports advice was to avoid untenured soft money jobs. in some places there exist tenured research professor jobs, the best of all possible worlds.
the gist of things is that professors in the us make a decent wage, although not what their compatriots in many business and professional areas make.
also many professors at least historically, were not in it for the money. when i was hired i did not even ask about such mundane matters as retirement packages, historical pattern of raises, opportunity for prompt promotion, opportunity for summer work, IRA plans, ...nothing.
not coincidentally i found myself at a university where those rewards were minimal, because i was seduced by the up front starting salary. even that was low, but seemed high in comparison to my graduate stipend. i was unaware of the action of inflation since i had become a grad student.
as a result i actually returned to work after 3 years of hard (and poverty level) study for a PhD, only to earn effectively the same salary I had enjoyed without one.
this all becomes more interesting when a professor has a family and finds out his kids are bright and deserve to go to top schools, but he cannot afford to send them there.
the merit scholarships of the 60's are gone, or dwindled to a tiny fraction of what they were then.
one enormous perq of a few top schools is free or discounted tuition for profesors' children. ask about such things, as that raises the pay hugely. tuitition and fees to a school like harvard or stanford for one or two kids can set you back literally hundreds of thousands of after tax dollars.
we are currently somewhat back in a climate like the 30's, where rich kids have more options than poor smart kids. this is the result of current political choices by the electorate.
so become a professor if you love the work, not for the salary. there will be many things you cannot afford as a professor, and if you are a hard worker, there will be many frustrations at dealing with many less determined people as students.
but if you can take satisfaction from helping people, not only the gifted and hard working, but all who come to you, and if you live for the occasional intellectually stimulating conversation, and long to add something significant to store of knowledge in some deep area, and enjoy the flexible hours [you work almost all the time, but on more or less your schedule], it can be a good life.