When there is a large inheritance at stake (or even when there isn’t), it is a great idea to get everyone on the same page. A family meeting can make that happen, and it can even be enjoyable.
Children may have moved away or lost touch. Old contacts may have died or become disabled. You cannot trust everyone and criminal cases based on misuse of a power of attorney do exist.
If you are admitted to a hospital for even minor procedures, there is a good chance you will be asked to read and consider signing a do-not-resuscitate order.