Earlier quoted context omitted.
What about all the lives your work might save ? What if you figure out how to crack the encryption of a network of evil doers so that the next bombing of civilians is prevented?
Have the foreign operations of the US government in the last ten years saved or ended a larger number of lives?
For some anecdotal evidence, I worked with a guy who was a colonel in the Army reserve. He was called up a few years ago to head up a base in Africa. His mission? To bring food and water to the citizens there. The army was doing this because they had to fight off the warlords who would try and steal the aid that was being provided.
So sure, you hear about a whole bunch of things the government is doing that is evil, and I'll be the first to stand with you and agree, but there is a lot of good being done too.
Imagine if the NSA had intercepted the plans for 9/11 and been allowed to stop it. 3000+ lives would have been saved, and you would have never ever heard about it.