In Jesus' parable of the rich man and Lazarus, when the damned rich man asks to be sent back to warn his family, Abraham tells him, "If they do not listen to Moses and the Prophets, they will not be convinced even if someone rises from the dead." I don't think that anyone is that confused by what is good and bad behavior, especially since HH's Heaven and Hell seem to have no regard for concepts like faith & orthodoxy, and only consider morality as the very minimalist beige, "just, be like a nice person, man". For those who can't manage such a low bar, I'm afraid that we must forever part ways, because morality, even this beige knock-off Christian morality, should not be this weak and watery.
From the Book of the Prophet Isaiah:
"All of us have become like one who is unclean,
and all our righteous acts are like filthy rags;
we all shrivel up like a leaf,
and like the wind our sins sweep us away."
Christianity, which this series is happy to bastardize, does not consider baseline humanity to be good. "So you also, when you have done everything commanded of you, should say, ‘We are unworthy servants; we have only done our duty.'" from the Gospel according to Luke, Jesus tells us, that doing good is the bare minimum, when we sin we're walking away from that, and even if we lived perfectly, that would simply be what was expected, not laudable. I get that the series isn't going to go this hard into concepts like that and grace, but wanting the denizens of hell to have a baseline of "not psychotic murder" doesn't seem too hard.