I find there’s also a factor of available energy. What I notice often happens is that browsing stuff like social media requires less mental effort than reading. So, you kind of just do it mindlessly when you’re bored, but then you end up regretting not having spent the time doing something you would’ve found more meaningful instead.

For me the writing style plays a huge role, some books I can chew through really fast and others I just read in small bites for months. :)

I got like 300 chapters into a web novel and then had a lot of stuff to do and stopped reading it for a year