Afterlife conundrum

I got to thinking today about afterlife. We (and by "we" I mean atheists) like to mock the concept of hell because the idea of a finite crime being punished with infinite torture is not only unjustified but it's laughably imbalanced.

But I've never heard or read anyone discussing the other side of this. Would it be fair to receive infinite bliss for finite mediocre compliance? Everyone could do better while they're alive. There's always something more you could have done. If being imperfect just once, like not believing in Jesus, could land you in the lake of fire for all of eternity, then shouldn't you have to be perfect to earn eternal happiness? And even that would be imbalanced.

I also have heard many theists rationalize the cruel injustices of this finite life by saying those who were savagely wronged will be rewarded in the afterlife. But what's more rewarding than eternal bliss? I mean, do these people believe there are degrees of bliss in heaven? Do some people have it better than others? Maybe some have wings while others have wheels on their feet?

I gotta tell ya, it would piss me off if I were gang-raped daily for 10 years, watched my family get murdered and then get killed myself in the most painful way possible only to arrive at the Pearly Gates to see some guy who had an easy "blessed" life getting the same treatment as me. This is why the whole afterlife concept falls apart as a reward. If there is any kind of mediocrity in heaven then why call it heaven? Yet we are told those who suffer here on Earth have it better there in heaven. And I have to admit I would be pissed if I led a good life and saw that others received a better heavenly experience for eternity.

And one last thought: If we're tempted by Satan on this finite planet and we fall victim to his charms, doing his work, etc., and we're sent to hell where Satan resides, why would he carry out punishments on us when we did what he wanted? How many people ask you to do something, you do it and then they punish you for doing it? That would be insane. As atheists, we don't believe in any god. If there were a god, then being an atheist in most religions would be a sin and we'd go to hell. Wouldn't Satan love to have us there and reward us?

An afterlife makes zero sense logically.