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This is exactly what most religions do. Think of non believers in their particular brand of religion as worth less, need to be converted, heretics etc.

Great post @papa-pepper but I have to disagree with you regarding evolution (cue massive downvotes!!).

The lack of belief in a God does not make someone bad, just as the belief in one does not. It is bad people that use these things as an excuse to justify bad acts.

Religion is just an extension of culture and what you are taught growing up which is why the vast majority of people follow the same religion as their parents and Grandparents. Its tribal. If it wasn't, people would make informed decisions and pick different religions based on their various merits.