Really?
Maturity is realizing that sometimes people have to do things they don't want to do, and that you wish nobody ever had to do. Sometimes this includes war.
And you're ducking the main issue. To advance the premise that those who go into the military do so because of ignorance, gullibility, or "immaturity" is to spit on the motivations and abilities of those who are willing to defend our nation and way of life. You have already expressed your pride in ignoring everything except what comes out of your own head. Sometimes it shows.
Maybe you should break the habit and frequent some military sites and blogs, and see what our military really thinks.
Start here.