Myth, the Universe, and Everything

I do think sf/fantasy readers are more open to YA because teen (or younger) heroes are pretty common in some of the classics of the genre. There are things being reprinted now as YA that were initially published as plain old adult sf/f. We know Ender's Game is a great book, for example, so the fact that it's about a child and mostly through the viewpoint of a child isn't an issue. So many of the fantasy heroes and heroines are in their late teens because there's often a coming-of-age element to the journey. I've been reading a lot of YA fantasy lately because the adult fantasy went into epic, dark, gritty, and plain old gross for a while, and YA is where I find things that read more like the adult fantasy I read as a teen.