Your comment is what many of the prophets have asked. It is difficult to see God's plan in all of this. But suffice it to say that the 80 years or so that we spend on this earth is a small drop in the ocean of eternity. Ten thousand years from now, these people will only have started eternal torment while this dear Christian will only be starting to enjoy the fruits of heaven. You can bank on that.
Absolutely.
I suspect that time is a concept that continues in hell to further the agony of those banished there.
You hope.