If I tell you that your child needs a heart transplant and will die today this day without it, how do you feel?
Take a moment and really think about that because it can happen to anyone any day.
(there but for the grace of God...)
So I bring in a live child, maybe an orphan, maybe one of those foreign ones that celebrities like to adopt. I hand you a gun and tell you that if you put a bullet through this child's head then I will transplant the heart into your child.
What do you do?
Because, if they are truly honest, everyone would do it, without hesitation.