Some people prefer to contemplate and accept. Some people prefer to fight hard until the end. Who are we to decide how people are supposed to live, or die?
Indeed—it's a personal decision that every patient and family have to make based on their individual situation. (Just as mine had to.)
That's why a categorical claim that there's no harm to having fighting attitude is patently wrong...not to mention harmful because it contributes to the stigmatization of accepting and preparing for impending death.