There are definitely awareness problems with age, especially with dementia. There’s even a word for it, anosognosia. It’s one reason a lot of people’s plans for old age don’t work out, they assume they will have the capacity to recognise when they need to make changes, whether that be stopping driving, not climbing ladders or going into aged care. And because our society values being able to make your own choices we allow people to cause a lot of damage to themselves and others before we allow anyone else to step in and start making decision.

Some people of course do use denial as a coping strategy through their whole lives, and that can also be a cause of refusing to admit being unable to do things. It doesn’t help that our society sees aging as a bad thing and has a lot of prejudice against the elderly, people would not feel as much need to deny their own aging if it was seen as a more positive thing.