So now you think it's ok to kill the healthy too?!
Healthy people get medical treatment, too. Healthy people can likewise choose to reject treatment. This has nothing to do either with their being 'terminal', or with the refusal of treatment necessarily resulting in death.
I have a benign heart condition known as "intermittant atrial fibrillation". It is a mild case. After extensive testing, I was prescribed medicine that was supposed to reduce the frequency of episodes of arrhythmia. I found that the medication was ineffective for me, and I didn't like the side effects. So I took myself off the medication, and instead concentrated on identifying what my triggers are, and avoiding them. In other words, I refused continuing medical treatment of my condition. By your standard, I would be required to continue treatment regardless of my wishes on the matter.
No. You wouldn't. That's some mulberry bush. Run around it alone. I'm for bed.