Chemotherapy combined with surgery and radiation is still a standard and still does cure a significant portion of people - my father's cancer was cured by this

Chemotherapy combined with surgery and radiation is still a standard and still does cure a significant portion of people - my father's cancer was cured by this "ordinary method". The problem is that more selective methods of killing cancers run up against the tendency of cancer cells to mutate and find a defense against them. And this is definitely stuff that's killing you and the cancer and hoping the cancer dies first. To keep going, you need a strong reason to live.