Okay I'll lay some cards on the table. Some books mentioned here already get a nope from me, Atlas Shrugged for example. I'd also probably nope on a relationship if someone told me their favourite book series was Harry Potter. It's a kids book, and a poorly written one at that, grow the fuck up.
If you're going to pick children's books or YA as an adult, at least pick Redwall, just saying.
I do agree with a lot of comments here, I think my one thought in terms of people saying they love children's books or YA as an adult (over 18), would be that it's kind of odd to me.
Unless, perhaps, the person is really mostly talking about nostalgic feelings (e.g., I don't think I would legitimately pick Redwall as my favorite book anymore but I do remember it with a lot of fodness and nostalgia).
Just felt like repeating to Atlas Shrugged is truly an awful book.
Man, you two would hate the millions of other general self-help books that get published every year.
I think it's less of an issue because it's a self help book and more of an issue of the overlap that exists between people who view Jordan Peterson as a) interesting, b) insightful, or c) a person worth studying and people that I don't want to date is sky high.
Although generally, I'm pretty disdainful and critical of self help books. However, there's a difference between books loved by mostly sad moms and books loved by some really creepy dudes (not exclusively, but my limited experience hasn't been great with Peterson fans, so to save my own time it's an easy red flag).
Academically or in terms of research I just get really tired of Peterson going off the rails and babbling (poorly) about things he doesn't really seem to understand or have studied. He was really at his intellectual peak when he published his Carl Jung fan fics and got tenture.