I for one think we should be able to make OUR own decisions when it comes to our bodies.
Most of the people that I know on dialysis (myself included) live at or below the poverty line and would never be able to find the money to buy a kidney, so we have no choice but to wait or hope that a member of their family grows a set and gets tested (yes, I have issues with my family over this). As Richard said, it would be the haves vs the have nots, and the have nots would lose yet again. With lists and altruistic donations, it is more fair, because money or status in the community have no say in whether or not you get a kidney