Associate professors unhappy because they have to work?

http://chronicle.com/article/Why-Are-Associate-Professors/132071/?sid=at&utm_source=at&utm_medium=en

But I think they have the last good job in America:

http://chronicle.com/article/faculty-salaries-data-2012/131431#id=144050


http://chronicle.com/article/Faculty-Group-Says/131432/?sid=at&utm_source=at&utm_medium=en


http://assets.wne.edu/78/Greentree_Gazette.pdf

I guess nobody is every happy with his/her lot in life.  Go figure...