i've given up on trying to convince people to read more adult fiction. for one thing, you can't do it without sounding like you're scolding strangers; for another, "only reading YA as an adult" is such a baffling, bizarre concept to me that i don't really feel qualified to speak on it.
Adult fiction does get read. Sadly, it's mostly pornography.
I think part of it is age. I don't recall YA fiction being a thing once we hit our teens. 12-13-14 is when you started grabbing Clan of the Cave Bear or The Mists of Avalon or The Winds of War or some Tom Clancy shit off your mom and dad's bookshelf. There was a flavor, but it wasn't specifically YA
Harry Potter was a major exception, but it was so new at the time that the rest of the reading pool hadn't caught up to "Here is a big popular book about teenagers having teen adventures that revolve around all the adults being so corrupt/inept that only the teens can save the world"
I'm also baffled by "My taste in films hasn't changed since high school."
All I'm saying is Alan Garner, originally marketed as Young Adult, but does he grow and grow in stature.
It’s the Age of Infantilism
There’s some really food YA out there but yeah. Read a grown up book from time to time.