You had it 100% right when you said belief in a god is the common denominator and then you try and turn that statement around in the rest of your reply.

Sorry, but the fact still remains immutable : Religion and or belief in some god IS at the root of this issue.

Mankind as a whole would be far better off without religions in general. Religion is the single most divisive issue on the planet and its varied followers continue to belittle, discriminate and kill members of differing faiths and all in the name of their preferred imaginary friend.

Religion is an assault upon mankinds intellect and logic and has been causing murder and mayhem all across the globe since it was 1st embraced.

If all religions were somehow to suddenly disappear globally it would magically also erase at a minimum 50% of the inhumanity of people against one another as the core reason they despise and kill one another would also disappear with it allowing people to see how much they are alike one another instead of the current situation which uses religion to divide them and keep them in a constant state of hate for one another.

Though I know it's an impossible goal, the best thing that could happen for our continuation as a race of peoples would be to eliminate all religions from the world. Such an act would do more good for the world as a whole than the current embracement of all these self claimed "religions of peace and love" ever could