How does a heart transplant affect society?

?? Sorry but I do not understand the question which I guess is why it has not been answered. It can be life saving and obviously is reserved for those with very severe damage to the heart muscle. It is an expensive procedure which perhaps relates to your question. Are you asking the question of whether the money could be put to better use than helping one individual patient at great cost?
Lives saved. It saves a lot of people on the verge of dying. But the cost to the society is very high. The drugs after surgery are also very expensive and most of the patients remain on welfare because of that. There are only about 2000 cases done every year.