I would recommend listening to this. I think it will raise some questions and perhaps generate some different answers than you might have thought you had.
Ken Murray, a doctor who's written several articles about how doctors think about death, explains that there's a huge gap between what patients expect from life-saving interventions (such as CPR, ventilation, and feeding tubes), and what doctors think of these very same procedures.
What do you think?
Did this change your mind on how you would approach the end?
If the embedded link doesn't work properly you can also listen to the episode here