The authors of the left behind series have taken the Biblical account of the last times of this world and asked how might it all unfold if we applied it to today's life.
For this Christian (who believes the Bible to be the truth), the series was uplifting, in as much as, my beliefs were not cheapened and the beliefs of other religions were not slated.
Each of the twelve books is an absolutely gripping read with an update from the previous book as a lead in. I would say that to those who do not believe in the Bible's teachings this series hopefully would provoke some thought about eternity.
If Biblical teaching is not your thing this series is still an attention gripping read.