Why do conservative Christians push for literal Creation so much?

I grew up in a center/right Church with fundamentalist roots. Growing up, I had always believed that literal Creation was the right way, and Evolutionists were corrupting science to fit their bias.

Now I've started to see more Evolutionist arguments against some of the scientific facts I was taught. But that theology is so deeply engrained that my brain resists evolution.

I noticed that this impulse seems to be the strongest. Sometimes, it feels like it is more important than even Jesus. Do you know why that happens? Is it because Creation has to fight against "those evolutionists" or something?

Edit: I know that Fundamentalists push for Biblical innerency, but from my experience, they seem to be pushing this specific issue above other parts. I grew up Adventist, and even the Sabbath push wasn’t this strong.