I think reincarnation is one of those things that people invented to buffer ourselves from direct consideration of termination of existence. For some reason, as a species and as individuals, we seem to need answers to questions about things we cannot know. I am curious why people who are unhappy in all aspects of their lives cling to life itself when it is threatened, and even choose belief in eternal existence after the earthly life expires. I would expect them to hope for quick and final release.