Originally Posted by fishii
I mean, when writing for adults you have to get far deeper into the mind of the character and the world, whereas for YA you can get away with it being a bit shallow - and once again, Twilight makes a perfect example, it's shallow.
The world needs more life and development to it for adults, yes religious, and political depths, and character depths.
As adults we want to know how the world works, from daily life, to religion, to politics and government. We want to know all the ups and downs of the character, just what they think of everything I just mentioned. We want to hear about their flaws, what they struggle to cope with in their life, and we want those struggles to be about things that adults would struggle with.