I used to be hardcore book before movie but two recent experiences changed my mind.
1. I finally read Do Androids Dream of Electric Sheep and it is radically different from Blade Runner. Setting, tone, themes—Blade Runner ditched them all and just kept the replicants and the protagonist's name. And its still a fantastic adaptation. One piece of art begat another.
2. I decided to read Poor Things after watching the movie because the characters were so charming. The two works' presentations are different but equally endearing. Reading the book now makes me appreciate the omissions and condensation made for film, and the director's visual choices and additions. It's like I watched a creatively interpreted abridge version and now I'm reading deeper in a textbook.
I think being so staunchly book-first made me approach movie adaptations with a lot of judgement. Now it's like I'm tasting a sample of a story and can choose to dive into the full course if it's compelling enough.