Pros
Almost impossible to get fired, if you are into that kind of thing. Nothing ever changes, if that is what you seek.
Cons
Management is something of a vast parking lot for the tenured. Job titles and responsibilities bear no resemblance to the skills and knowledge ordinarily expected of those in such positions. Because of this, you will have to endure a nightmare marathon of completely unproductive meetings wherein posturing and gladhanding substitute for intelligent conversation. It is like welfare for those who have been around for a long time and would do or say anything to keep in the running for the pension plan, which they have thankfully stopped. As such, the expensive tools sit around unused for years while the 'leaders' balk and blink and stare. The people who actually understand core functions are subjected to the firewall of inane meetings where subjects which are easily searched and learned on the internet are second-guessed and 'consensus' becomes the stone pushed by Sisyphus. Consultants are ignored as well, down to the definition of common words. The result is a haven for those who seemingly have no desire to read and learn or change the way of doing things, leaving a core group of competent individuals somewhat overworked to keep things running as the others merrily tend to spreadsheets, arcane tracking and unreadable documentation, the useless phalanx of Confederacy of Dunces meetings and two hour lunches in the middle of six hour days. Fun for all!