absent - the will to survive, the will to fight for getting better (exercise, etc), the will to give up alcohol and smoking (remember George Best and how a liver was totally wasted on him and could have gone to somebody else) - etc, are just as important factors as a good match. So is the age of the patient, if they have children, etc. It is naive to think that these factors are not taken into account.
And age should be part of this too. I would NOT want to benefit from an organ knowing that another person did not, who had a life in front of them and children to see growing up. Surely?