I'd considered it right out of high school, I'm glad I didn't do it then, I don't think I'd of been able to handle it. However, now I've got a much better mind set for it and outlook on life.
The thing is, yes, the bureaucracy will be annoying and stupid at times, and listening to people less intelligent than myself will be irritating, but the opportunity I'll have is far too much worth it.
I get to be a cryptologic linguist, I'll learn a foreign language and utilize my skills deciphering foreign language.
The thing is, as much as I like my choas and lack of structure, when I am in a structured environment, I'm a lot healthier, than if I'm allowed to sit idly the whole time.
Opportunity and adventure is a massive appeal, being able to move around between bases and swap jobs fairly often while still gaining a larger paycheck and having all my education paid for....
There's not much downfall, other than listening to rules. Which, we have to do anyway in society.