[Mediterraneo10]

"When you become a tenured professor, the amount of work you do is far less than the vast majority of other jobs with a similar salary. The only real commitments are the classes you have to teach."

I doubt this is true for the United States, but it is definitely false for many European countries. Tenure gives you job security, but it also brings an enormous amount of administrative obligations. In my experience, conversations with tenured faculty tend to revolve around how much they hate the endless bullshit meetings they are required to attend, the long many-page forms they have to constantly fill out for uni administration, and how it has really eaten into their time for research or family life.