Duh....

Study: Military service makes men grumpier

A new study appears to support what recruiters have known for years: Military service transforms people. But for friends, family and future co-workers of recruits, the transformation may not be for the better. The study from Washington University in St. Louis found that military service — combat excluded — seems to make men less “agreeable.” And the effects appear to linger long after troops hang up their uniforms.


Well no shit. It's because we've spent half of our life being subjected to alternating bouts of extreme efficiency and  a complete lack of common sense. Not only is that going to linger in the form of perpetual pissedoffedness, it's going to make us utterly intolerant of both abject idiocy and anything remotely resembling the Good Idea Fairy.