Christianity
The belief that some cosmic Jewish Zombie can make you live forever if you symbolically eat his flesh and telepathically tell him that you accept him as your master, so he can remove an evil force from your soul that is present in humanity because a rib-woman was convinced by a talking snake to eat from a magical tree.
“It is from the Bible that man has learned cruelty, rapine, and murder; for the belief of a cruel God makes a cruel man.”
― Thomas Paine, The Age of Reason
“Of all the systems of religion that ever were invented, there is no more derogatory to the Almighty, more unedifying to man, more repugnant to reason, and more contradictory to itself than this thing called Christianity. Too absurd for belief, too impossible to convince, and too inconsistent for practice, it renders the heart torpid or produces only atheists or fanatics. As an engine of power, it serves the purpose of despotism, and as a means of wealth, the avarice of priests, but so far as respects the good of man in general it leads to nothing here or hereafter.”
― Thomas Paine
Do you have an imaginary friend that manipulates the world for you? Did he also magically impregnate a woman two thousand years ago, who bore him a son who underwent an ancient ritual of blood sacrifice to dispel a curse laid on you to ensure you would be immortal? Are you now immortal? Do you really need all of that garbage religion laid on you in your life?