Harry and Draco didn't ask to die. They definately didn't ask to be revived. But when the Universe gives you a task, you can't exactly turn it down, can you?
What if Harry had responded differently to the Department of Mysteries incident? If he didn't want to "be Gryfindor" anymore because that part if him always got him into trouble, didn't it? What if the Hat realised this change in Harry? What would happen if Harry Potter went as green as his eyes and some people didn't approve? ((DRARRY))