[DossarLX ODI]

Going to what Izzy said, religion does have a heavy focus on death. Looking forward to an afterlife with a currently terrible life situation? Go kill yourself, God will forgive you, and you go to heaven! It also doesn't help that extremists can glorify suicide/violence by saying God will compliment them for doing so. Or, always fear that you might accidentally commit a sin, and then get sent to hell when you die.

It also doesn't require a religion to figure out that there are certain essential rules needed for any group to survive. For example, a society cannot just have people murdering or everyone would just be afraid of each other. That leads to distrust and miscommunication, and no society would be able to exist under such pandemonium.