Why the heck does everyone always think that if you join the military, you have to fight? There are different branches. My dad joined the Air Force, and he was only taught how to shoot a gun like once when he first joined in Officer Training School. He's retired now after over 20 years of service, and he never once went into combat. Heck, most of the jobs in the Air Force aren't flying jets, they mostly involve computers. My brother's friend, too, just recently joined the Navy, and he's basically a firefighter on an aircraft carrier.
The only problem with joining the military is that you get moved around a lot. You very rarely get to choose where you're stationed. Ever since my dad joined the military, we haven't lived in a single place for more than two years. The experience of visiting new places was great (e.g. Japan), but it also meant that we couldn't settle down. Now that he's retired, of course, we have, but if you joined the military, you would have to be prepared to move around a lot.
Oh, and if you're wondering why they move people around a lot, it's because they don't want soldiers to get too loyal to their commanding officers. Look up how Julius Caesar got into power. It's quite interesting.