Pros
It pays reasonably well. There is good work/life balance, although I think the real reason behind this is that management is too oblivious to care what your doing, hence it is easy to balance non-work obligations with work. The benefits package is not bad
Cons
Advancement is based on age. If you are near 50, promotion and advancement are highly unlikely. Over 50 there is no advancement except in the most senior ranks. Management decisions are based on a given manager's bonus calculation--e.g., you will not be rewarded for innovation, intelligence, or even a job well done if it contradicts the politics that impact the manager's bonus calculation. Innovation, intelligence, good work in and of themselves are not the primary factor in advancement--see last point