Biff, Chip and Kipper was notoriously boring until they got to The Magic Key and started to have adventures. (I was reminded of this when I became a teacher and they were still using the same reading scheme!).
As I'd read the entire reading scheme, plus the extra ones, by Year 3/4, I was sent off to the school library by myself to choose something to read. I loved doing that!
I tended to like the books that we read at primary school, like Charlotte's Web, any of the Harry Potter books that were out at the time, and Goodnight Mister Tom.
At secondary school, it went from The Turbulent Term of Tyke Tyler and The Boy in the Striped Pyjamas to Blood Brothers, Of Mice and Men, Pride and Prejudice, far too much Shakespeare (with Romeo and Juliet on repeat for three years solid), books that I've probably obliterated from my mind and some terrible poetry.
I am an avid reader in my free time, but even I had to have a break from reading anything after having to read many boring books and dissecting GCSE texts too many times. The fear of being put off reading for life was partly why I didn't choose to do English Literature at A-Level! I was annoyed that my friends at another school got to do their English Literature GCSE based on books that I'd read for fun in my free time...