If we eradicated religion would we have peace?

Religion bothers me because it allows people to justify their hatred. I have a lot more power when I can condemn people in the name of my deity than I do if it is just me angry about something. Personally, I despise religion. That being said, I don't think people would act better without religion. Radical Muslims and Evangelical Christians would be bad people, even if they didn't have a book that they felt justified their hate. We seem to have a desire to always feel superior to someone else, and apparently hate them as well. We will simply find different ways to sort ourselves into groups and use those to attack other people. Look at how divided politics and ethnicity makes us. People just suck.