In Devarim 30:19, we are told by G-d to "choose life":
This day, I call upon the heaven and the earth as witnesses [that I have warned] you: I have set before you life and death, the blessing and the curse. You shall choose life, so that you and your offspring will live;
The meaning, which is clear from the context, is to choose Mitzvot and walk in G-d's ways, over the alternative.
My question: Is there anyone who interprets this literally, that Man has an obligation to choose to live?
Suppose someone is diagnosed with a highly treatable, but fatal (if untreated) illness. Is he obligated to choose the treatment, or can he choose to forgo the treatment, even though his life-span will be shortened? Do we tell him "The Torah says to Choose Life"?