This argument misunderstands what "evil" is. Evil is the absence of a good that should be there. Whenever we sin, it's a direction of what we think is good but it is not. Us humans were made to be social, helpful creatures born to flourish on Earth. The social aspect of humans is important for it is very hard to be virtuous without it.
Every lolcow for whom we make thread would live a very different life if his or her social environment had better morals.