Okay, I freely admit to being one of the most unreligious people on this board, but even I can see the fundamental flaw in thinking there. Since Satan's fall and his resulting hatred were basically products of irrational thinking, why would he behave rationally to piss off God just for your lowly human benefit, kid? Wouldn't making you eternally suffer be more in keeping with his overweening pride and tendency to excess? Hmmm?
Well and if mankind is beloved by God, one would acknowledge that even when sent to Hell, it would pain and break the heart of God to know one of His beloved is suffering eternally. I think they miss the whole part that God doesn't want any of humanity to part ways from Him. They are counting on God hating the person that got sent to Hell.
Also, I do believe Satan was jealous and hateful of humanity to begin with. Party with a human? Not on your life. Satan might use humans, but he has too much disdain for them to ever put them up in comfort of any kind on any sort of permanent basis.
As another twist when one is sent to hell it is like they have been left to the sharks. God has washed his hands, reluctantly, and left you with your enemy whether you know it or not. His protection gone.
That's been my take through years after much consideration as to the whys.