As a Christian I believe in an ever lasting after life, but I've just come to the realization of how awful that would be. No matter how great the after life is, eternal existence sounds like a hell. As an example say we are coming up with a new year scheme...it's still 365 days 24 hours a day and so on, now imagine every second is 10 billion years. Also let's imagine you are about to start a race, but it's been 5 million new years and you are still waiting at the start line, you are waiting for a race that will NEVER start; you will never get closer to the end. That is basically what forever is, so no matter how great heaven is it will turn into an inescapable hell.