The vacuum is not what they see. You make assumptions about wishes of others. You can't make people live what you believe in. The choice has to yours for your wishes and theirs for their wishes. Most people who practice this are terminal. Dementia is terminal.

Sorry I can't answer, since I do not understand you properly. What do you mean by "X is terminal"?

Alzheimer's has few stages and once it hits a certain stage it is defined ax terminal; they are no cures and no slowing it down after certain stage. There are few other dementia types that are vascular and they are also terminal.