Christianity's goal is not escape from this world. It loves this world and seeks to change it for the better.

"So, is there an afterlife, and if so, what will it be like? I don't have a clue. But I am confident that the one who has buoyed us up in life will also buoy us up through death. We die into God. What more that means, I do not know. But that is all I need to know."

Marcus J. Borg