An elderly patient needed a heart transplant and discussed his 
options with his doctor. The doctor said, "We have 3 possible 
donors; the 1st is a young, healthy athlete who died in an 
automobile accident, the 2nd is a middle-aged businessman 
who never drank or smoked and who died flying his private jet. 
The 3rd is an attorney who died after practicing law for 30 
years. Which do you want?"

"I'll take the lawyer's heart", said the patient.

After a successful transplant, the doctor asked the patient why 
he had chosen the donor he did.  "It was easy", said the 
patient, "I wanted a heart that hadn't been used."