From your perspective. But what about the perspective of the person in
that situation? Many people reject God and are happy for doing so.

You’re right.  I have my perspective.  I don’t have certainty and I don’t have universal knowledge.  So, basically, I can’t speak legitimately "about the perspective of the person in that situation."  I mean, I know people that have rejected God and are happy enough for doing so.  But I don’t speak for them.  They should speak for themselves.  

I would say a few more things, though.  A relationship with God isn’t necessarily about happiness.  Happines, in other words, isn’t a good indicator of one’s relationship with God—be it a close relationship or a disconnected relationship.  

A trusting relationship in God is an act of faith.  A rejection of God is also an act of faith.  Both are acts of faith. 

Fidelity in God is not a one time event.  It isn’t that I am saved and those that have rejected God are not saved.  I know people that were once saved and have since lost their faith and I know people that had once rejected God and now are most trusting and loving toward God.  Faith is dynamic.  Maintaining a fruitful relationship with God and neighbor is an ongoing process that many of us struggle with all of our lives.  

He compares hell with judgment (Mat 5:22). Hell is a place (or whatever you want to call it) God himself casts the wicked (Mat 5:29; 10:28; 18:9; Luk 12:5). In fact, Jesus calls hell judgment: “Serpents! broods of vipers! how should ye flee from the judgment of gehenna?” (Mat 23:33).

I think that I spoke too soon and didn’t look at my own essay close enough.  Jesus does indeed speak of "hell" and "judgment" together.  We are in agreement.