Rynessa wrote:
Perhaps Hell is a lie God made up to scare us into goodness. A little "stick" to go with the "carrot" of Heaven.
I also like the good cop, bad cop hypothesis.

Just one little detail, you presume the lie originates with God. Contrary to popular belief the existance of a special hell God throws people who don't believe into is far from universal among Christians and if you cared to study the history of the christian church you would find that is was certainly not an original doctrine. Read the gospels Jesus's scathing attacks and dire warnings are aimed at the religous leaders who were using threats of hell. Even then the interpretations of the message being an eternal hell comes down to funny arguments about ages and when is the last age as the literal text is for an age and an age (ie a long time). In any case in most cases Jesus explicitly stated that the sinful would be DESTROYED but this is ignored.
For many the ultimate fate of the universe is to return to God. We are all heading to the same place and it is only our own nature - what we have become - which will determine how we experience this situation. The question might simply be: how much of you would still manage to exist in this new state?
Unfortunately, in the minds of a lot of people Christian beliefs are those held by the Catholics (and its various offspring-branches from the last few hundred years).
Funny thing is that those who teach an eternal hell really believe that is the only way people would love God, but through the ages there have always been Christian who have loved God without any "or else..." threat to compell them.