Not surprising to see this at the top of the list: overall, it's the best job in the world:
1. Once tenured, you can't get fired for anything short of a major felony
2. The benefits are better than nearly any non-government job
3. You can work as much (or as little) as you want
4. It's a highly enjoyable profession, provided you're interested in your field of study
5. It's generally well paid, if less than a few other professions
Profs tend towards depression, OCD, borderline autism and general whining, but they are happier in their jobs than 99% of humanity.