It is morally unacceptable. The error of judgment into which one can fall in good faith does not change the nature of this murderous act, which must always be forbidden and excluded. The decisions should be made by the patient if he is competent and able or, if not, by those legally entitled to act for the patient, whose reasonable will and legitimate interests must always be respected. The use of painkillers to alleviate the sufferings of the dying, even at the risk of shortening their days, can be morally in conformity with human dignity if death is not willed as either and end or a means, but only foreseen and tolerated as inevitable.
Palliative care is a special form of disinterested charity.
Everyone is responsible for his life before God who has given it to him. It is God who remains the sovereign Master of life. We are obliged to accept life gratefully and preserve it for His honor and the salvation of our souls. We are stewards, not owners, of the life God has entrusted to us. Suicide contradicts the natural inclination of the human being to preserve and perpetuate his life.