I'm not sure I understand your perspective on that. Ostensibly, the purpose of your defensive forces is to protect you, and don't you want them to be well equipped for that purpose? To me, your statement looks equivalent to saying that equipping the police to do their job is like an investment into the idea that putting people in prison is a splendid idea. I'm not sure that's what you were saying, although you could say that if you are hyper cynical. But even if you were, I know where you will call when someone is breaking into your house at night.