There is often much handwringing regarding adults reading YA novels. As someone who reads YA for kicks but who mostly reads classics and literary fiction, I can understand both sides.
There is interesting, clever and fairly well done YA. There’s also a lot of terrible YA. I do think, in general that people ought to read what they like as there’s far too little reading going on in general. YA is fun and can serve as a pretty nice getaway from some heavier adult literature. But I also don’t think that it’s best to just limit yourself to YA as an adult. There’s a lot of nuance in adult literature (in general) that is absent in YA (in general). But mostly, I fall back to “Read what you want, guys!”