I was a creationist. They likely believe what they believe is true and have "scientific facts" to prove it. They do not likely consider that their science is bias as it comes directly from the church and is not accepted by actual scientist of a solid reputation. They likely believe they "know" more than you do on the subject.

I pretty much categorize them among flat earthers and climate science deniers.

Funny, it their case, it is a choice

My current is a creationist, so what ? She is great in bed so that makes her beliefs bearable.

I’m from the South(North Carolina). Thick on the ground here, including my family. Kind of incredible, that anyone believes the Bible as literal truth.