Death is not unChristian. And facing it without fear is completely appropriate, religiously and psychologically. Putting 80 year olds on vents 4 or 5 times doesn't make us more of a culture of life.
I share your concern over the tendencies towards euthanasia in our elite's teachings and philosophies. I do not find them practiced with any sort of frequency in my area. I find the opposite. Oncologists doing chemo up to the patient's last breath. Internists hoping the cardiologist tells the patient there is no more that they can do for their CHF while the cardiologist believes that's the internists' job. Ditto for COPD and the pulms. And it is precisely of the secularity of our culture, not the religiousness, that they fear having "the talk" with their patients.
In your humble opinion, I'm sure.
I may not agree with your humble opinion however. I am in a geriatric specialty too though it's far from pulmonology or internal medicine. Nonetheless treating on average 80 geriatric patients a week I know better than to believe my dad's case is "the exception."