>>149111835 (OP)My guess: Heaven is full of a bunch of stuck up NIMBYs who do not actually want to help people, and absolutely don't want too many humans up there. (literal gated community). They are hostile to anything that threatens to ruin their paradise.
This means they want 99.9% of humanity to go to Hell so the angels don't actually have to deal with them. Therefore angels impose a rule that Hellborns can't come to Earth, in order to keep Hell and Heaven (relatively) a secret to humanity. Sure Earthlings kinda know about these places and some believe, but the vast majority of humans either don't believe Hell is real or aren't 100% sure deep down. If humans KNEW with absolute factual certainty that Hell is real way way more of them would take it seriously and be actively trying to get into Heaven. The angels don't want that. They're NIMBYs. So they tell the denizens of Hell to never come to Earth