The answer to all these questions is yes.
In my case, it will be when my autonomy for my basic needs will have been significantly altered. It will be when I can no longer eat or go to the bathroom on my own, or be unable to wash myself. For me, it's autonomy. I may be too proud, but I don't want to share those things, particularly when I know that I have a degenerative disease that's not going to go away.
If I had an illness that meant receiving intimate care on a temporary basis, I think I could accept that, knowing that I would get better at some point. But I know that for me, things are going to get worse, and I have no interest in accepting such things. My children all agree—