It's unfalsifiable to anyone but me that all of my actions are based on my perceived self-interest. There's no benevolent act that I can perform that can't be surmised to be ego-driven; because my internal motivations are only accessible to me. That said, I always get something out of my benevolence, even if it's only avoiding guilt or enjoying a warm fuzzy feeling.
I'm not anti-Christian. I'm anti-stupid.