The human mind evolved to.search for meaning. Religion isn't about gods.... it is about interpreting the world around us to find meaning.
Atheists do this the same as theists. Most human beings believe things without evidence that they never question. Whether we believe in one or more gods is irrelevant to our need to have beliefs to explain our place in the Universe.
Yes, but resistance to understanding beliefs beyond the religion(s) we identify with as our own limits our access to wisdom that could benefit us.
This is true whether it is religious people refusing to give consideration to scientific information or scientific atheists dismissing all religion because they don't like the idea that natural cause and effect can be attributed to God or gods as their author(s).
Diversity and multiculturalism have gained such prominence in contemporary life, yet the will to exclude and hate has grown proportionally.
The reason for exclusion and hate most likely is that every insight brings with it a corresponding logic for constraining/controlling action in a way that is beneficial. E.g. if science shows us how too much sugar or caffeine or alcohol, etc. can harm us, then that brings with it a corresponding logic to stop or reduce use of those substances.
When people believe in certain religious ideas, science, etc. and then some other information is presented to them that would lead them into restrictions that they wouldn't otherwise have to deal with, there is a reflex to reject the new in favor of the old cultural understanding that didn't include the new restriction.
So basically the problem is that the will to unrestricted freedom (liberalism) impels people to avoid new cultural information and knowledge that would lead them to greater restriction in their choices.