I'm not much of a reader now at 40, but as a kid I was definitely that weirdo with a book all the time. I was one of those kids who would use any source of light available to read after bedtime. Pretty sure I read at least one of the Boxcar Children books by the light of my 90s LED alarm clock.
Now, though, I just feel like I don't have the available brain cycles to do it. It's either that my brain is done by the end of my work day, I'm too tired, or I just run out of time in my day.
I think I've been following the typical progression of a "90s Gifted Kid" with ADHD whose spirit was crushed in the late 90s/2000s by grownups who wanted me to fit in to whatever mold they cut for me. The cognitive load of masking all the damn time left nothing to spare for reading.
I've become a reader again, off and on, in my adult life but like anything else I do, it never sticks for long.
In other words, while ADHD drives many people to read VORACIOUSLY, it is probably what keeps me from reading, despite loving stories.