The reason why atheists hate religion is because in religion, there is a god. Of course, that's why they are called "atheist" it is because they do not believe in ANY god. Another reason is because, we all have different beliefs. The beliefs in church sometimes contradicts the beliefs of the atheist. For example in Christianity, it is illegal to do same-sex marriage or it is against the natural law, while in some atheists, it is right for them that same-sex marriage should be empowered.
Maybe no Maybe yes. Atheists believed that god doesn't exist on this world they believed that everything are being created by science by the year past everything is on the people at the moment they generating new generation with the help of technology. it is illegal that they create same sex marriage this is not in the bible.