They used to talk about "Second Childhood". Sounded like a good idea, something you could even look forward to.
But the pity is it isn't like that - except sometimes, and sometimes it can be.
The thing with Alzheimer's is that it isn't just fading memory, and confusion, if it's just that, can have that, and it's alright really, if a bit awkward at times - it's a process of destruction and invasion, and it's an illness that happens to some people, not a stage of life that's up ahead for all of us.
I remember, when I was at school (and I'd have been about six or seven) one day the classroom emptied, and I oput on my hat and coat and I waited and I waited to be fetched home. Then everyone came back in, and I found out they'd all gone for lunch. So the teacher handed me over tom the nuns, and they took me to lunch with the big children in the convent next door, and the big girls all made a fuss of me and I had a lovely time.
You don't have to be old to get confused.