Who Should Decide when "Extraordinary Means" to Preserve Life Should Be Discontinued?

Who should decide when "extraordinary means" to preserve life should be discontinued? The individual, the family, or the government? In my opinion, I would say that no one has the right to end another person life no matter what pain they undergo. Taking away a human's life is considered immoral, unethical, and unlawful, and it is considering a crime. In other word, I'm totally oppose the idea of euthanasia. Euthanasia is "Inducing the painless death of a person for reasons assumed to be merciful?". …