Curious to hear from others. How do you rate books?

I’ve seen a lot of people that say a 3 star is a good book for them and they only give higher stars for books that are almost perfect.

For me, I give out 4-5 stars a lot I think but it’s because it’s about how hard it was to put the book down. Whether I thought about the book when I wasn’t reading it and if I was attached to the characters. 5 stars to me doesn’t necessarily mean it’s the most amazingly written book, just that I had a really good time reading it.

I was curious to hear how others rate! I think it’s all valid, I’d just love to know how others do it too.