negative. Religion is only a cause of an effect. If we didn't have religion, we would just find another cause to produce the effect.
Mankind as a whole is just a rude, selfish, egotistical, and violent species.
Part of our individual thinking comes into conflict when our egotistical attitudes cross someone else's opinion. If we didn't fight about religion, then we would just fight about whatever was big enough and diverse enough.
The reason Religion is such an offensive topic, is because people can't have one discussion about it without a mindset of making the other person adopt his views. It's such a diverse topic and almost everyone has a different opinion about it.
Religion wouldn't cause so much arguments if people just had a more patient and open nature.
Everyone is entitled to their opinion, and if you think to yourself, "no one can make me change my belief" then what makes you think you can change someone else's?