There are many ranks in this world, from prestige, reputation, richness, career, etc.
The Quran argues the variance in ranks in the next world are even bigger but those depend on our deeds and faith and state we die in.
Let's take away fear of hell for one moment. Say everyone enters paradise.
To me, even this was the case, because this are chance to attain rank with God, and prove ourselves to Him, we shouldn't live for just temporary moments, but for God and the Next World.
We should try to attain as much as possible speed in traveling towards God and ascending to him.
Now the fact is, since, preferring temporary pleasures and gains, over God and next, aside from that usually those pleasures are based on intoxication from Iblis' magic, but say it was not a falsehood and had truth. Just from the viewpoint that God is better and more lasting in reward, makes such a decision to choose this world over God so evil, an act of great insolence towards God, that he does merit his wrath in the next world.
So how foolish is it given missing out on reward from God and not racing towards ranks that remain and reward and relationship with God that is everlasting, for temporary gains, and but how more so with the threat of fire.
Why choose this world? The Quran shows it comes out of one thing and one thing only. People doubt God and next world.
Take away that doubt, and people would choose God and next world.
So why doesn't God just remove doubt off everyone?
To me this is the trial. Evil deeds build up uncleanness, the uncleanness is that disquiet doubt. However, we can slay it. We can slay the darkness within.
The moment a soul decides to slay the disquiet doubt with reason, is the moment it sees God clearly.
There is also the leap of faith one can take, and talk to who they believe would be God's representatives. In this case, they can also cleanse us of the dark murk and destroy the doubt, by connecting with us and connecting us to God and making us see the light and higher realms.
This method might seem impossible, but in fact, it's practical. People can doubt at various degrees but know which religion would be truth if God existed. Then you take a leap of faith and ask the interceders to intervene on your path and help you by God's permission.
God should also be prayed to even if one doesn't know for sure he exists.
My question to atheists or people who doubt God, have you tried reaching out to Mohammad (s) and his family (a) and asking God to intercede on your path through them appearing as light? Or do you find this impossible to sincerely do as long as you doubt God? If so, please explain why.