Religion is a human endeavor there will be no perfection of outcome.
To peg my response on something in order to make it coherent. "maximize crusades, jihads or traumatized alter boys"
How many wars have there been with & without religion as a defining cause? How many crusades (let's define as an invasion + genocide). How many molested?
The answer is on the whole less war, less crusade, less molestation due to religion, adjusted for contribution. Alongside many many many benefits due directly and singularly to religion without any other cause.
Religion is a net positive and to suggest otherwise shows inability to view the subject objectively.