God intends for us all to have a puropse, but those who don't know Christ, won't have any purpose once they are dead because they have rejected God and therefore rejected His purpose for them. They end up in eternal punishment.
I believe they, and believers, end up dead, then gradually decomposing and disappearing.
I believe your need to believe in eternal punishment for those who do not believe as you do is kind of sad.
I also find it a little alarming that people can look at others with differing beliefs with such disdain that they believe they should be punished for an eternity (as in forever, which is a concept in its own that's hard to fully grasp) not because they're bad people, but simply for disagreeing.
It's hate and for all the good the gets pointed out regarding religion it's a concept I find ugly, believe what i believe or suffer the ultimate torture. Great way to create a less than outgroup.