[Titus Quinctius Cincinnatus]

I’ll never understand why there is/was so much antagonism, potential for violence, conspiracy, intrigue, and general over-all animosity involved with differing faiths.

Well, we could ask the same question for atheists and other "freethinkers" as well. After all, they managed to kill more people in the last century than did people from all religions put together in all centuries previous combined.

[stuartcr]

Yes, they are included.