I guess in response to an above poster that if we all went when the lord called us home, the planet would have a lot fewer people as there are plenty that we keep alive after the lord's pulled their number with our modern medical practice and technology. Not that I think that there is anything either wrong or right with that, but just that the lord has been left holding only the number pulled on many an occasion.
Personally I would want to choose euthenasia in many a circumstance. I don't want to be a burden either financial or otherwise on people, and if I'm dying and terminal don't drag it out.
On a personal note, when my mother died it was both a sense of relief and sorrow. She was no longer herself and in that state it was no longer someone who was either happy or who had a fulfilling existence, but yes, I would have wanted her back as she had been before the illness. And I certainly miss having her as who she was, but I don't regret her dying as she was no longer herself, or what people had found most attractive in her -- her personality.
I don't know. It would be hard to let a partner go, but I guess it should be for the person to decide, and one should respect that decision.