Pros
No job in the world mathces the possible excitement of a submarine officer. The long hours, time away from family, and difficult working conditions are almost completely washed away in 4-6 hours of watch in a difficult (re: challenging) situation. In addition, the medical benefits, vacation alloted, retirement packages are not paralleled in any industry.
Cons
Time away from home and family is the most difficult part of military life. A seven month deployment can bring large amounts of stress and possibly hardship. The regimented day/lifestyle are difficult to accept if you are a self-motivated and competent person. Working within the limited freedom of the military and possibly under difficult environments dictated by leadership problems is more typical than one would think.