Assisted Dying Bill [HL]

My Lords, why is it thought wrong for someone to ask to die out of a sense of duty or a wish not to continue in a condition that is intolerable—the condition of being disruptive, indeed often destructive, to the well-being of their own family? All the way through their life until this point, putting their family first will have been counted a virtue, and then suddenly, when they most want to avoid the trouble, bother, sorrow and misery of disruption to their family, they are told they are not allowed to follow that motive. I simply find this extraordinary puzzling and I would like the noble Lord to explain it to me.