>>6290361Precisely. So in an actual loving way, yeah I'd say it's a mental disorder of sorts. This doesn't mean that cute 2D girls don't also deserve some affection though.
Think about when you have an object that holds value to you. You're not going to just drop it on purpose or kick it around, no you're going to treat it with respect. Same for 2D girls. If you like the character then I think it's perfectly fine to express that with adoration.
