. >> reporter: joe gasperovich would take exception to the ethical argument for withholding expensive medical treatment for aging, failing americans. he was born in 1919, and would prefer to prolong his life as long as possible. if they say we need a $1,000 cat scan, do you... there is a( point, an age you reach where you should say no, i've lived 90 years? >> no, i want more. >> reporter: you want more years? >> everybody, nobody wants to die. >> reporter: dr. weinberg says the decisions about the ethics of distributive justice for society as a whole are often much more difficult when the doctor is meeting with a patient one-on-one. >> the health care dollars, an inordinate amount, go to taking care of people in their last six months of life. but how do you know when those last six months are? you have a person who has worked all their life, done well, paying taxes and now they are 80 and they have a heart attack. that may be the person who lives 10 or 15 more years. are we going to say no just because of age? that's a very, very slippery slope. >> reporter: there is a huge ethical d