You have your own ideas on what should happen, if you are incapacitated. However, your loved ones could have other ideas.
What happens if you do not have a living will? For example, if you are in an accident and decisions need to be made about your medical care, your family might not have a good idea what decisions you would make. That can create problems for them, as they try to decide on what care you should receive, according to the Sentinel Source in "Planning ahead for health decisions benefits everyone."
There is a better way. Make your wishes known in advance and ensure that they are legally enforceable. With a living will, you can set out what procedures doctors should and should not perform, if you are incapacitated with no chance of survival. A health care power of attorney can be used to appoint one or more persons to make medical decisions for you, if you are unable to express your wishes.
An estate planning attorney can advise you on creating an estate plan and living will that meet your unique circumstances.
Reference: Sentinel Source (April 18, 2018) "Planning ahead for health decisions benefits everyone."