I just came across to this post and decided to post.

In my perspective, human do need religion because I believe that religion is here to lead and guide us to the right path. I am not too sure if there are other religions who encourages evil but I am talking about the Christians, Muslims and Buddhists.
We obviously do not know the existence of hell, heaven and reincarnation/rebirth for sure because there is no one who have been there and came back to tell us.
But we, humans, who are afraid to die have a desire to live on in the future in a better lifestyle. I think that is why there is such places called hell, heaven and reincarnation - life after death. It's a choice of whether how you want your future to be. By doing good, we will end up having a better after life and vice-versa.

what i meant by the right path is being good, not evil.
don't religions promote good moral values and stuff?

because as humans, we hate insecurities.
when we are unsure of something, we try to make something up/link it so that we can be able to feel secure.
like how the moon has got a rabbit 'shadow', how mars has got a face shaped mountain or something.
people made up life after death thing was probably to have a sense of security in their life, knowing that if they have done good things, they will end up having a better after life.

then again, this is what i think and everything is from my perspective.
you can disagree with it though. =)

there has been also instances where one can remember its past life.
it has been documented in the discovery channel show.
the little kid, around 7 years old, if i am not mistaken was crying day and night saying that he wants to meet his parents when his biological parents is right there with him.
then it turned out that he was talking about his past life - telling his biological parents where he stayed, who he was in his past life and picturing his parents from past life. they tried finding his past life's parents and turned out that whatever he said to his biological parents is true.
well, that little kid was only 7! is there possibility that he is lying?

plus, there has been christians who gone to heaven and back. they have also published books. how far it is true, i have no idea. i have not read the book.

these are the reasons why the believers choose to trust religion. though we may not be experiencing it first hand but we can hear from others who are lucky/unlucky in a way. (=