Honestly, it's a job that comes with an implicit "you are worth less than our objectives and your life will be risked if we deem it." No OSHA, no safety regulations (well, militaries have their own regulations...) Get in the barely tested hardware and determine if it'll protect you from a bomb. Also, if you disagree, we'll put you in jail or jack up your life.
That said, countries need armies. Where would Ukraine be if they decided to disarm for security agreements that were then quickly violated? And what if that foe was actually competent?
But, like, post-Vietnam, Americans should've realized they weren't the good guys. It's a shame new people keep getting born and don't realize the whole history of their country...