These are fights between people who think that they interpret the religions correctly, even though their interpretations are different. You can tell because, nobody has exactly the same interpretation that anybody else has... from every single person to the next. Yet there are groups of people who get together because they think that they have the same understanding of their religion.
So, it is retarded people who fight, not retarded religions.
The perfect example why separation of churc and state is needed.
Then you also want to educate people from young age about critical thinking and rational decisions. The current public school system sucks.
Although religion and spirituality is ok, people should not have all their lives orbiting around it, they should be able to put them aside when needed.
And especially keep it private, after all your beliefs are your personal thing, and should not be used as a weapon against others.