I can only speak for people in the United States of America but another option is a living trust. This avoids giving power of attorney until a medical professional has declared one unable to consent. The document can have well thought out instructions created far in advance detailing who has what powers and what properties/items may be transferred in advance of and/or upon ones mortality. This avoids some family drama when people make sub-optimal decisions. A living trust can mitigate some of the drama and legal battles. Assigning trust managers can also mean there are people looking out for you and/or family members when you are incapacitated, limiting how much money is paid to whom at what intervals typically limited to a number of years after your passing. A lawyer can walk one through the most common issues specific to them and ensure it is in the legal documents. This is also a good way to protect properties and bank accounts but that is a whole topic in and of itself.
