I am.
And a moral absolutist as well.
Ummm... Most atheists I know are moral absolutists in the strongest sense. Somewhere along the way someone in the non-atheist camp concocted the idea that atheists were moral relativists (perhaps from an outlier example), but any real interaction with them makes it very hard to construe them as this. In my experience, they are statistically more prone to being moral absolutists than self-labeled Christians, for whatever that's worth. You got your idiots in both camps, but most of the atheist position is premised on moral absolutism, so you would pretty much expect to find it there whether you agree with them or not.