Yeah, add me to the camp of those who see it as your own personal morality influencing your game choices rather than the other way around. That said, I don't think wanting to see what happens when you blow up a bunch of innocents in a game makes you likely to be a psychopath. Most people understand the difference between games and reality.

As for me, I probably go for the 'good guy' choice 99% of the time. I don't like being mean to people even if it's fake.