The Pentagon's Supersonic, Shape-Shifting Assassin
Military R&D is a necessary evil. We could stop it today, but I can promise you Iran, China, and North Korea (among others) won't do the same. Granted we're a few steps ahead and it'll take them a while to catch up, but when it comes to war, I'd rather be as far ahead as I can be. That's the reason Desert Storm was so short, because we had the technology and money behind it. We didn't start that war, but I'm sure glad we had what we did or it would have been a lot longer or had a lot more casualties, but probably both.
Just remember, there are a lot of technologies we use every day that developed out of war, like it or not. I hope it changes some day too, but I highly doubt it. It's human nature to kill eachother.