What is one thing you're proud you haven't done?

There are lots of 'bad' things that I have never done, but I'm most satisfied that I never cheated or two timed a romantic partner even though I had many opportunities. I was always and always will be loyal to the core. I know that is old fashioned and out of touch by todays standards, but oh well...too bad.
I'm not "proud" because that's the way things SHOULD be.