The General Social Survey asked respondents if it is true that: "I sometimes try to get even rather than forgive and forget." Below you see the answers by religious affiliation.
All groups have higher rates of vengefulness than Christians, including the "nones." This makes sense since Christianity stresses forgiveness.
Among Christians, those that attend church all the time are the most forgiving.
And nowadays many of the people with no religion like to accuse devout Christians of being the haters.