It seems to be those in the article believe that after 75 or 80 there is nothing left to contribute. Age gives a perspective and experience that is not easily replaced. If the brain is out of sorts then this could be understood but personally I would hope that people choose to fight on.
It could be my experience with a closely knit family where even grand and great grand parents have been considered valuable. It is true that there came a time where the memory gave in and the life of those we cared about became just an empty shell, and it did take extra effort and time to keep them alive. It still was worthwhile at least in my eyes. We all have different preferences, and others might disagree.
All these things we consider related to old age are eventually going to become curable ailments. If a situation comes when a person is turned into a vegetable then living on would seem pointless. However, if the mind is reasonably sound and dependency isn't too great, why not enjoy this gift of life. Who knows if there's going to be another try.
Wow! Someone actually responded to the OP without manufacturing a rightist conspiracy plot along with its accompanying rant.
Thank you.