I work in the field of application security and through friends and industry conferences I've come in contact with a number of people who play for the other team. Many of them have similar life experience and opinions about the world around them as me and frankly are fun and interesting people to have a beer with. All of them have engaged readily in philosophical discussion about what they do and why.
The commonalty of their argument struck me, and basically boiled down to:
"Look man, let's be honest, all that stuff about free markets, win/win, ethics, it is all fantasy. We live in a state of nature. The strong survive and the weak perish. Our world, bad technology, and my skill means that I am strong. I'm just surviving and frankly your belief in that stuff just serves the purpose of stronger people who want to dominate you."
I had fun trying to tear this down in each case. How would you approach it?