I believe it will be some time before the majority on this planet except evolution, much less that there is likely no god(s). It's often said we're in the 21st century for goodness sake, bemoaning the lack of people's ability to accept reality.
In contrast to this view I'm amazed at how far we have come in such a short period of time. "Origin of Species" was written less then 2 centuries ago. We are essentially the same biologically speaking as we were 10,000 years ago. Emotions and the subconscious rule the day for even the most educated among us.
I believe mankind's progress on a global scale will only occur when neuroscience cracks our codex. I am hopeful that this will happen in my children's lifetime. They both have yet to see a decade pass.