Lots of them give compelling reasons for thinking that the Earth is more than 6000 years old.
If it had only scientific implications there would be no problem. It has personal implications- God created everything 'very good', man sinned, man is fallen, Jesus dies on the cross for mankinds sin. Atheists HATE this. It must be avoided at all costs hence why retarded pagan creation myths are believed to avoid this 'inconvenience'. No ones saying the atheist cant believe by religious faith in one kind of animal producing another kind, just that is not science (never been observed). The concept of 'evolution' started in the garden of Eden
Genesis 3:1-7
Now the serpent was more subtil than any beast of the field which the Lord God had made. And he said unto the woman, Yea, hath God said, Ye shall not eat of every tree of the garden?
2 And the woman said unto the serpent, We may eat of the fruit of the trees of the garden:
3 But of the fruit of the tree which is in the midst of the garden, God hath said, Ye shall not eat of it, neither shall ye touch it, lest ye die.
4 And the serpent said unto the woman, Ye shall not surely die:
5
For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil.
6 And when the woman saw that the tree was good for food, and that it was pleasant to the eyes,
and a tree to be desired to make one wise, she took of the fruit thereof, and did eat, and gave also unto her husband with her; and he did eat.
7 And the eyes of them both were opened, and they knew that they were naked; and they sewed fig leaves together, and made themselves aprons.
Genesis 3:5-6
5
For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil.
6 And when the woman saw that the tree was good for food, and that it was pleasant to the eyes,
and a tree to be desired to make one wise, she took of the fruit thereof, and did eat, and gave also unto her husband with her; and he did eat.
'Evolution' is the myth that mankind is 'evolving' and getting better and better and better and one day with enough knowledge will 'evolve' to the level of gods. It is the lie started by the serpent on the garden of Eden and MILLIONS have fallen hook line and sinker like gullible fish for it. Mankind is decaying and the lie is things are going in the opposite direction. Sheep to the slaughter. Zombies with no clue what lay ahead of them.
Hebrews 9:27
And as it is appointed unto men once to die, but after this the judgment: