Snuka, that doctrine is called Universalism
Members of many faith traditions believe this, although an undetermined number may not wish to discuss it. You can look it up on Wiki, but they do not have any definitive answers, either.
One argument is that a perfectly loving God could never create a Hell in the afterlife.
Another one is that the early church emphasized Hell, to be avoided thru salvation thru faith in Christ, to boost membership.
Get different viewpoints on this, and think about it for a while. If Anybody tells you that they alone posess the truth, run in the other direction.
Good Luck, Bruce Chris
"Christianity is not about what you believe, it is about how you treat other people; - with God's love"