For me, I skip the preface about 35-40% of the time. I've learned, however, that there is often good and sometimes critical info in a preface, so I am reading them more and more.
I never understood why preface exists so I also used to skip it until I started to write. I appreciate each page of the book now. Everything is connected!
For authors out there, do you mind if you post your preface in this folder?
For the readers in this community, please send like if you would read the book after reading the preface.
Thank you in advanced! Have a good day! =)