Vice-presidential debate: A question for Ryan

With the vice-presidential debate being held later this week, I don't know how many people will be watching, but I do have a question that I would like to have answered by Rep. Ryan. I am sure that every time Vice-president Biden brings up the Ryan budget, he will try to explain a little, but I'm also sure he'll remind Biden that it's the Romney/Ryan ticket, not the Ryan/Romney ticket. And he'll say that Romney isn't going to use his budget. But that would lead to my question that I hope Biden asks. If Romney isn't using your budget, isn't going to cut programs that you want to cut, doesn't agree with your plans for social security, medicare, and medicade, doesn't agree with the personhood amendment that you and Rep. Akin sponsored, and you have no foreign policy experience to give him, why did Mr. Romney pick you? And if Mr. Romney disagrees with all your major plans, why did you say yes to being his running mate? Planning on changing his mind and convincing him of your ideas? And if so, why should we believe him now? Well, that may be more than one question, but that's what I'd like to know if I got the chance.