"If you've seen the evidence and you can't make yourself believe, then how do you expect me to do the same thing in relation to believing God?"
Why should we decide what to believe on the basis of evidence? In an atheistic universe without God, why should we not choose to believe whatever pays us the most, or whatever brings us the most pleasure, etc.? Why be rational at all?
What evidence do you have that supports the belief that we should base our belifes on evidence?
This is an inherent weakness in atheism - a demand to follow certain rules of behavior, "reasoning," etc., without any justification or basis for imposing such restrictions.