Rejection of the Genesis account as mere myth strikes at the very heart of Christianity for the following reasons.
1. Jesus himself is described as lending it historical credence
2. Peter. Paul, Jude, Luke, Mathew, John, specifically lend it historical credence
3. It removes the basis for the theme of paradise lost to paradise regained.
4. It removes the need for redemption and a redeemer-the fall of man from original perfection.
5. It strikes at Jesus' authenticity as the Son of God by describing him as gullible and a propagator of mere myth.
These five things alone are extremely serious reasons why Christians are opposed to accepting the anti biblical demonically inspired, propaganda which has become popular during these last days.
Radrook,
I don't believe that any of your claims are true.
Do you understand that every day people are leaving Christianity because creationism doesn't make sense? I've talked to these people. No one ever became a Christian because they thought creationism works out.
I talk to people in their 80's who have been creationists all their lives. Even they can't make sense out of it. They still want to know who Adam and Eve's sons married. I don't have to ask this question, they bring it up.
Just to deal with your points (1) and (2):
Many creationists say that the world is 6,000 years old, even though written history alone goes back 6100 years.
Jesus never said that the world was 4,000 years old, when he was on earth.
Peter never said that the world was 4,000 years old.
Paul never said that the world was 4,000 years old.
Jude never said that the world was 4,000 years old.
Luke never said that the world was 4,000 years old.
Matthew never said that the world was 4,000 years old.
John never said that the world was 4,000 years old.