The reason I wrote the statement Only the one who loves can take responsibility for extinguishing someone else's life comes from reading the book Kvinnan första könet, by Björn Ranelid. I will in short recapture the essence of the book.
The story is about Anna Ribe born 1925. She becomes a school teacher. Gets married and give birth to a child with a defect that makes the head grow out of proportion. What happens is that liquid is not being drained out of the head so that the pressure increase makes the head grow giant. This can of course be fixed today. This child of hers is also mentally handicapped. The normal thing at that time would have been to put the child in an institution and let it die, but Anna Ribe loved her son. She spent every penny she could save on her son's care, which ment that he was placed in private institutions where there at least were nurses who would make sure he could listen to the classical music he enjoyed. Her son is so mentally handicapped that he has never learned to talk, but that does not stop Anna Ribe from visiting her son as often as she can. One day when she comes and visit her son she looks him in the eyes and the only thing she can see is suffering and she can see in his eyes that he wants to get relief from the suffering. So after having cared and loved her son for over twenty years she decides to help him move on. She picks up the pillow and suffocates him. The way I interpreted the act of this woman, having read the book, is that she loved her son and she made the decision to extunguish his life based on this love, and she also carried out the act herself.
It is my belief that money should never be a part of a decision wether to allow someone to live or not. It should be based on love for that person. From a theoretical perspective the idea of love contains the ideas of natural empathy and morality. In layman's words it means you have a profound understanding of the person and you want to do what is best for that person.