Imagine if you trusted someone with your own life; 
Would it be wrong or would it be right if they helped you take it because you asked them to?
It's selfish, leaving such a burden on a loved one's shoulders.
Is that what they deserve? Watching the reason they live for... die?
Too traumatic, unbearably devastating. Do it yourself!
And this is why I wouldn't trust someone I love with my own life.