Atheists believe that life is meaningless
On the contrary, religious people often worry that life is meaningless and imagine that it can only be redeemed by the promise of eternal happiness beyond the grave. Atheists tend to be quite sure that life is precious. Life is imbued with meaning by being really and fully lived. Our relationships with those we love are meaningful now; they need not last forever to be made so. Atheists tend to find this fear of meaninglessness … well … meaningless.
Atheism is responsible for the greatest crimes in human history
People of faith often claim that the crimes of Hitler, Stalin, Mao and Pol Pot were the inevitable product of unbelief. The problem with fascism and communism, however, is not that they are too critical of religion; the problem is that they are too much like religions. Such regimes are dogmatic to the core and generally give rise to personality cults that are indistinguishable from cults of religious hero worship. Auschwitz, the gulag and the killing fields were not examples of what happens when human beings reject religious dogma; they are examples of political, racial and nationalistic dogma run amok. There is no society in human history that ever suffered because its people became too reasonable.