While it is true that atheists score ‘better’ on a huge number of social and intellectual indicators we could all do with remembering that correlation does not indicate causation and that statistics present a majority view that doesn’t – so much – cover the outliers.
The ‘meme’ image on the left covers some of these statistics:
Atheists are, indeed, less likely to get divorced, be criminals, have abortions, have kids that are off the rails or abused etc etc. We also tend to be more intelligent and better educated and to do better in our careers.
This does not mean that religious people are necessarily stupid or immoral, nor does it mean that atheists are necessarily better people. It just shows that – on aggregate – not believing in god at least doesn’t negatively impact our morality and capabilities in the way that religion can.
The problem with claiming that this is all down to atheism is that so many of these things cross over. Atheism correlates with relative wealth and education because – I would suggest – that these things give us the relative comfort, time and tools to rationally assess the facts. Relative wealth and education also have a massive impact on criminality and other factors.
What I’m saying here is that these statistics exist at the crossroads of a bunch of interrelated and reinforcing factors. You can see the reverse in the opposite statistics in that religious people are more prevalent amongst the poor, racial minorities, the under-educated and so forth. In the same way that a confluence of effects accumulate upon the atheist demographic, so it is here.
Skepticism needs to apply to all claims, not just the silly ones that believers trot out.