I would want whatever measures are reasonable in terms of cost and difficulty weighed against likelihood of my recovery. I don't want my loved ones in debt or hanging onto an irrational hope of my recovery. For short-term situations, yeah, I would appreciate measures taken to allow me to live, but not extreme measures. I would want the decision to be made inline with what the medical professionals would consider a reasonable effort for the likelihood of recovery (if money wasn't influencing their decisions). It is an important question and kind of has to be discussed before the situation occurs.