Do you believe in "hell" as it is described in the Bible?

I am very spiritual but claim no religious affiliation. I have always had a problem with the Christian concept of "hell". Does it make sense that a God would create human beings, knowing they are imperfect, and expecting to cast large numbers of them into the depths of hell when they mess up? Does he/she/it not have any forgiveness itself? And what about all of the people who lived before Christ - do they all go to hell because they had the misfortune of being born before he was? If you apply some logic and rationality to all this, it seems to me that either God is not God, but an imperfect, jealous, wrathful being, OR that there is no hell in the sense that the Christian churches describe. What do you think?