The first thing you learn when you're blogging is that people are one click away from leaving you. So you've got to get to the point, you can't waste people's time, you've got to give them some value for their limited attention span.
I encourage everyone I know to sign an organ donor card, but if someone doesn't want to sign, that's his or her choice. If someone isn't willing to give an organ, however, why should that person be allowed to receive an organ?