Sundae, with your health system, taking the drugs doesn't require a whole lot of decisions on the part of the patient, unlike here.
Retirees are the ones that need/take many of these expensive drugs. With Bush's sellout to the Drug companies, many of them are put in the position of having to pay for them without help. When making the choice between the drug and the rent, the NNT(and understanding it) would certainly be helpful.