Many years ago, my mother was becoming more and more forgetful and confused, to the point that we knew she would soon need to be cared for in a home. By the skin of our ( my brother and I) teeth and the help of the family doctor who had known us from birth, we managed to get a Power of Attorney set up so we could deal with her financial and health affairs. Otherwise it would have been really difficult to sort out the finance when, as expected, she had to move into a care home.
So, remembering this, in my early 70s I told my elder daughter and partner that I would like to give them Power of attorney over finance, not to be used now, but to be available if I went the same way as my mother . They agreed and it is in place. I didn't like doing it, as I'm ultra independent and hate the thought of not being in control, but trust they will only act when and if it is indubitably necessary.