Why do people disagree on the origins of man?

Answer 1

Because some religions say one thing while scientific evidence says another. Neither group can accept the other's point of view, since they are simply incompatible.

<><><>

I think it is because they see Creationism and Evolutionism as mutually exclusive rather than supportive of each other. Many people who believe in evolution are atheists, but despite the rumors about him, Charles Darwin was not. Many people who believe in special creation talk of God creating man in his own image, but they are so preoccupied with the physical image that they forget about the spiritual image. They represent two extremes to which a person is expected to choose one or the other.

<><><>

I would have to say that throughout human history there has never been a single unanimous agreement, at least not in areas where speculation has room to maneuver.

This question could almost be phrased "why doesn't everyone believe in Jesus?" Or perhaps, "why isn't everyone as objective as science?"

I personally think people find some status in disagreeing, especially if the disagreement is well thought out and eloquent (or backed by aggression). Agreeing with someone about something you did not know prior gives them the status of having contributed to you, while passing such to another lends the same. There is power in agreement, some are more loath to give it up than others.

This is a very lame answer, but I believe the question to be without any single right answer.