It is important to discuss the possibility (or is it certainty?) of falling seriously ill, and of facing a likely death.
Everyone needs as we get older to think about what care we would like in this situation, in particular:
1 what we would like
2 What we would not like
3 who can speak for us if we are unable to speak for ourselves.
A link to a useful document can be found here Planning your future care,
and some useful forms are in this link Preferred Priorities of Care