Pros
You are on the pointy end of the stick defending the US and its intrests. You work with great people and it is an adventure. (really I am telling the truth!)
Cons
Long Long Long hours! 6 to 12 to 15 month deployments.... Danger and sometimes fear. (But hey that is the adventure!) Then the fact that you have to be an officer or involved in nuclear power to make big money, Most Junior Officers and senior enlisted do not understand respect but often preach it. Think of it like this... every one is required to do Physical Training, the middle and junior ranks are tracked on completion, but if you are senior enlisted or an officer you can not go /do it and get away with it. plus they are the ones to write the review so they are great at it even though they fail to met the standard.