Pros
Your mediocre paycheck will clear. Decent catering around the holidays. If the managers like you then you might be able to move laterally with no title or promotion. The lobby is lovely. There are only fruit flies in the summer. Maintenance will come and clean up dead mice in a few hours.
Cons
If you love to be micromanaged this is your place! If you never expect to be promoted, send in your resume. If you want to watch a half a million in salaries spend 3 hours whining over a layout, break out the popcorn. Your union dues will be wasted on people who couldn't negotiate their way out of a box. It's always fun to watch people with no skills climb the ranks, right? Your health insurance will cost upwards of a mortgage payment and your raises will never be enough to cover those costs.