If you think a professor only works 100 days a year and is a cake job, then you are a fucking idiot. Ever heard of publish or perish?
There is no more competitive a field than academia. There are very very few permanent jobs relative to the number PhDs out there, and the way to get a permanent professorship is to work your ass off and get published while teaching 4 or 5 classes. Oh, and if you do manage to get tenure track assistant professorship, then for the next 7 years you have to keep researching and publishing until you create a book-length tenure packet that get's reviewed by your colleagues. Guess what happens if they don't sign off on you? You're fired.
My ex-gf graduated from FSU with a PhD in English literature. That year there are a total of about 60 positions open for her field. This was a larger number than usual. Hundreds of PhDs were minted and there also already established English Profs looking for work. She got a temp professorship in Oklahoma for 2 years and then a tenure track position in the middle of nowhere in Oklahoma. If she ever wants to leave and come move to a real city, she has to write a book, literally. She knows Middle English, Old English, French, and Japanese, is extremely motivated, and organized. If she went into the private sector she would be making at the very least double her salary, she would be living in a much nicer place, and she would be less busy.