We made our first wills when we had children and have updated tem every time we oved house, as it was convenient to do a ot of legal things all at once. We made POAs 30 years ago.
My parents always had up to date wills and made POA's in their 5os
My personal experience is that the most difficult people to get to make POAs ar single people or childless couples. I have twice had to take caring and legal responsibilities for childless aunts and uncles. Each time I and other family members have tried to encourage them to make POAs, but couls we? Of course not.
In ine case, although my incle had given up all responsibility for running his life, he was always mentally capable, so I just did everything and he would sign anything I gave him without question. I had signature rights for all his bank and savings accounts.
In the second case we had a farcical meeting between a solicitor, my aunt and uncle, both with dementia, and after roundabout, almost comical discussions the solicitor decided that when they agreed with something we said that was sensible, that at that moment they were in their right minds and had agreed. The way we got the POAs would not have stood up to even the most cursory examination.