Heaven, like God, is hypothetical. Meanwhile, on Earth, the innocents suffer and die.
What better way to beat vulnerable people into submission both mentally and emotinally by brainwashing them into a fear of a hell and promise of a heaven.
And like communism, it's a doctrine you are not permitted to question... 'or else'... coz the God botherers like Socialists know what's good for you.
-Bulletproof and Waterproof don't mean Idiotproof.