I relate to all of this. :( I have bad CNS/brain injuries which make life intolerable and torturous. I was suffering from mild/moderate ME before this (made a mistake when i was in a bad crash, panicked and took some stupid drugs the doctors prescribed me which caused the current devastating injuries) and was able to still build a good life around my limitations so i don't have a problem living with disability.. But there are conditions that are so nightmarish that people who haven't experienced anything like that can't or don't want to believe it.
i think especially when it's something doctors can't help you with, a lot of people just can't handle the reality that you could suffer unimaginably, so much that the torture makes you scream every day and there is no hospital to go to, no drug to relieve it, no-one to turn to.. My loved ones still don't really believe it despite seeing me being tortured by my nervous system and hearing me wail and beg for god or something to let me die basically every day for months. I still find myself to be in disbelief despite being the one to experience it 24/7. How can a person be this sick without dying, how can a person be this sick with nowhere to turn to, it just totally pulls the rug under your feet. I feel like i am floating in space alone, so utterly alone, the feeling of basic safety i was fortunate enough to have all my life turned out to be an illusion.. Once something really goes haywire in your system it can just cascade into further and further horror and only now i realize how little western medicine knows, how limited is the scope of illnesses they can cure.
I too really wish i could have hospice and grieve together with my family instead of me grieving alone and them when i'm already gone.. then thinking what they still wanted to say to me.

it breaks my heart. My damage is irreparable in a way where it's against the laws of thermodynamics for it to be healed to a degree that would give me an acceptable quality of life. The human body is capable of incredible healing but a broken egg cannot be made whole even if you go to a 1000 specialist and you don't need anyone with a doctoral degree to tell you that. Yet my loved ones insist i "cannot know that it's permanent" until i somehow prove it, until a doctor specifically tells me i will suffer this level of torture 'til i die and i don't think that's ever going to happen. Perhaps they can offer rehab for my brain injury and i will learn to perform a few more basic tasks like cook a meal, while still feeling the same mental and physical torture but from the doctors' point of view i will be "better". But it would make no improvement to my quality of life personally. I ask my loved ones then what's the end date for this, when will you believe it's permanent, five years, ten years, fifty? But they can't answer, and i know it's unfair to expect them to. :(
If this was a condition that was going to kill me, it would be a tragedy i didn't have to bear alone but we could share it with my friends and family, where as now it's my tragedy and them being in denial and then their separate tragedy when i'm gone. I think it's only a rare kind of person who could accept their loved ones rational suicide and sadly it's probably unreasonable to hope for, like Bear1234 said.
So i still try to remember to be grateful that i am not actually alone, even though i feel like i am alone in my suffering, and that i have people to help me even though they are not helping me the way i wish they were (helping me to get accepted for VAD instead of more futile attempts to get treatment) and realize things would be much much worse if i didn't have that help. It's hard to appreciate the help when it doesn't really diminish your suffering, hard to be grateful that you are on the 5th circle of hell and not 7th haha... in fact it feels impossible and i am so afraid of driving everyone away because i am angry and ungrateful. How do you all deal with it?
It helps a little to share with people who understand. OP, I experienced consistent improvements with chinese medicine for my ME before my stupid mistake. but i've never been severe and obviously don't know how long you've had it and what all have you tried and the same things don't work for everyone, i definitely don't want to make you feel even more invalidated.. just putting it out there. Let me know if you want any further info on the stuff that helped me. All the best