Plenty of alternative ways to extend life when diagnosed stage 4 cancer even and have it be quality life. Just have to be open to changing foods, stress, taking supplements or juicing/smoothies.
Praying Alex surprises many doctors and lives well beyond the normal for prognosis with quality life as many others diagnosed stage 4 pancratic and various other forms of cancer have done. Sometimes it the treatments that kill the patient weakening them and they can’t fight any more, seen that with many family and friends.
My wife has been living with stage 4 breast cancer for four years now since diagnosis, and with the exception of just a little bone pain at the outset, she's had no symptoms from the cancer. But the treatments have run down her immune system, with the result that she's been hospitalized four times with infectious sicknesses. Apart from those incidents you wouldn't know anything was wrong with her.