Augustine said something like "usually the man who refuses to believe in God has a reason for wishing He did not exist."
Some atheists are good decent moral people. Some atheists choose atheism, because it frees them from any moral constraints of Judeo-Christian morality, which is based on the self-revelation of a Creator-God.
That's not only is that wrong, it's self-serving. It looks like an attempt to set up a condition where one is forced to disprove another's wild assertion for it to be discounted. One only has to not be convinced to not believe in a religion.
See, all that's not really unique to religion. But in its defense I can say that it may be somewhat true if applied to non-objectivist atheism, which probably accounts for most atheists.