Bingo. I have no doubt that Satan is going to "fry for eternity". The difference is that he ****KNEW**** GOD. We don't ****KNOW**** Him. We can have faith in Him, but we don't have ****knowledge**** of His existence. If we did, things would be much different here.
So you see it comes down to mercy and free will, & if you don't I guess that's okay (but I couldn't believe in a God that would be so criminally cruel to his own creation). At any rate, it makes no sense to love people so much as to become one of them to die for them & then keep the vast majority in a place of never-ending torment.
A good enough analogy of that would be that I have two puppies & I keep one in a place where he gets good food, plays frisbee all the time, gets petted constantly, and learns all kinds of wonderful tricks, and is the happiest dog there can be. The other dog, I beat constantly, burn off his fur in a BBQ, poke him with needles, pinch him with pliers, scrape his burnt skin with a cheese grater, do this every day, and keep him alive just as long as the other dog. This would land me in jail & many people would want to kill me because it is insane behavior.
God is a logical Being. He created us in His image. He wouldn't make us smart enough to realize good & evil and simultaneously cut our legs out from under us with something as infinitely evil as burning people forever just because they didn't hear about Him in the right way, lived in a remote part of Pakistan or was raised on evolution. Even Hitler doesn't deserve that! No one does. Only those who actually knew God existed with actual knowledge (like Satan) would be deserving of eternal damnation because they would have been living eternally in heaven when they made such a choice. We have free will, allowing us a life time of choices, the angels had one time to choose, and that's the difference you need to understand. You can debate all you want, but you should realize that you are making your version of God out to be a madman who weilds his power like a playground schoolyard bully. Burning up in hell for 5 minutes or 5 days is reason to fear!!!!!!! Who would jump into a vat of boiling sulfur????? There will indeed be gnashing of teeth. But don't make God out to be worse than all serial killers in all of history!