I am co-exutor with my sister on her recently deceased husband's estate.
The will was done in 1987. All is good, the paperwork is fine.
First thing my sister did a month or so after his death was to attend a lawyer to create a new will for herself along with POAs.
Why...firstly an update was in order. Secondly, and perhaps more important, the wills and estates legistlation where she resides had been updated. Secondly, her existing will would no longer satisfy her wishes. If not revidsed it could be now be constested. Hence a new will.
I cannot imagine depending on an old will or not taking the time time to review, renew, and change your will, your POA's, your medical directives in order to bring them up to scatch.
Such a small amount of effort and expense that could saved the loved ones that you leave behind a great deal of red tape. Not to mention any emotional angst in dealing with incomplete, out of date, or changes in legislation. An act of kindness to those we leave behind.