I feel really lucky now. Short of the one librarian at school, I never had a bad librarian. I was reading Steven King by the time I was in middle school, as well as encyclopedias and physics books, and whatever else I could get my hands on. My parents trusted me that if something was too scary I'd talk to them about it or stop reading it. The one book that my parents told me I couldn't read was Gerald's Game. And having snuck it out to read it, I'm not surprised. It is one messed up book.
It took my parents a long time to realize that sending me to my room had little effect on anything. Even once they got rid of the small bookcase I had in there, I always hid books around the room, including under and around my bed and in dresser drawers. They'd send me there to punish me after checking to see that there were no books, and they'd come back two hours later and I'd have a book at my feet that I'd finished and another one I was working on.
Apparently it's always been weird to my mother that my sister and I can read several books at once and follow the plotlines of all of them. Yes, sometimes they get a bit confused, especially if it's a lot of similar books at once, but otherwise it's not that bad at all. Plus I can always mention different books in different company, depending on who I'm talking to.