As a 10 year Air Force veteran I can tell you a few things about the military...
1. the hardest part about the military is putting up with the bullshit. military life is characterized by hours and hours and sometimes days of sitting around doing nothing, followed by a brief period of absolute screaming madhouse chaos, and then going back to doing nothing again for a long time.
having to live under these conditions will rapidly stress you out, and eventually start to break down your mind. this is what boot camp is for...to weed out the people who can't function under these circumstances.
2. military life is only like what you see in Full Metal Jacket during your first year or so when you're in boot camp and then later phases of training. after you get all that crap behind you and get into your day to day "job"...its just like going to work for any other company except that you have to wear camouflage uniforms.
3. the military is full of people from all walks of life, including some real crazy son's of bitches, so don't worry about not fitting in. everyone there is just as weird as you are. that being said...a lot of the military discipline is based on breaking down your self identity and making everyone look and act the same (at least on the job), so if you have a need for radical self-expression you're going to have to put it on the back burner for a while or the system will find ways of making your life suck in a hurry.
4. the military is a great way to get job training in a useful skill that will carry you later in life (assuming you get a good job...i.e., don't go in for infantry or cop...get something that teaches you a real world technical skill, like aircraft maintenance or computer engineer) and also you'll probably get some free world travel out of it which can be nice...as long as you like traveling to dangerous 3rd world countries most of the time.
5. the military is controlled by a "good old boy" club...which are mostly fat old white guys from the southern states and Texas. Unless you think you can suck up to this kind of person and play the game by their rules, its better to just try and keep a low profile. You can't fight the system...its too big, too powerful...and they've been at this game a lot longer than you have.
6. And then lastly i guess, you have to realize that at the end of the day, your job in the military, no matter what it is, plays a part in killing people to further the interests of the United States government. You get decent pay, job training, college benefits, and world travel in exchange for this, but in the end, you have to accept that by volunteering your service, you facilitate death and also you can be ordered to charge headlong into your own death should it be deemed necessary by your superiors. (though the likelihood of you dying in combat these days...especially in the Air Force...is seriously slim)
but either way, its some seriously heavy shit to consider...and you need to decide before you sign up, not after, cause once you sign your name on the dotted line, they own you for the next 4 to 6 years.
But don't get me wrong, its not all doom and gloom. I had a hell of a good time during my service. but eventually i got to the point where i was like, "okay, i've had my fun...now its time to move on to something else."
Anyway, I hope this was some of what you were looking for.
~Switters