A. Because they'd have to admit to fooling around with lots of bugs and chemicals and radioactive shit of the kind they say they're too civilized to fool around with.
B. Because they'd have to pay compensation.
Soldiers are there for politicians to use and throw away. There are few things more disgusting than the sight of a politician praising the nobility and self-sacrifice of our "wonderful men and women in uniform."
All politicians are as bad. The price of high office is that you sign away your humanity. It's a Faustian pact. "I get to be famous and powerful and the downside is that I will have to kill people (at a distance of course) and lie, lie, lie? O.K. I'm up for that. Better me than that other fellow!"