That's a bad and harmful way of looking at things. You know, toxic positivity is as harmful and damaging as nihilism. Moreover, it's couched in selfishness.
First off, it's not me proclaiming the terminal one dying. That would be the expert, like a doctor or in the case of the "planet", which in this case actually means our species and/or our civilization as Earth herself will be fine and life will go on.
I could fall to pieces, go into denial, be all about me and my feelings and demand everyone hold out for a miracle that statistically is a million times less like than being struck by lightening. But that doesn't do the patient any good. They're still dying.
Doctors do use the words terminal and end stage for a reason, you know.
Lot of people think like you do. I don't. I think it should be up to the patient to decide how they want to spend their last days.
Lay there waiting? This is a profound lack of imagination and will. It's also a waste and more about someone else's feelings and comfort than the dying one.
It then, I'm not afraid of dying. I dealt with that existential bugger a long time ago so I don't feel compelled to project that fear onto someone who's dying.
Palliative care isn't about laying there waiting to die. It's about getting your affairs in order, mitigating pain and discomfortz saying goodbye to family and loved ones, deciding what you want to leave behind and how, preparing for those who will replace you (this is usually professionally), and spending your last bit of time on your terms.
You know what happens with pursuing every false hope? You spend a lot of time alone in the hospital, isolated and in pain, being poked and prodded endlessly, cut up, bits hacked off one at a time, lying around and just waiting to die. Many eventually despair over why it's taking so damn long. They cry as they lose themselves. They wail as their spirits break, knowing they're going to be subjected to more agony.
Forgive me....I don't see any hope in that. I see horror. That's a horrible way to go out.