I can't imagine anything worse than cleaning the shower screen after every use, while stark naked and shivering. Plus I can't reach high enough to the top or low enough to the bottom to do a proper job. And that is just one daily task - quite apart from the kitchen sink and worktops, the loo and basin, the floors, cooking, shopping, washing, hoovering etc. Getting older also means "slower" to me so I would be spending half the day, every day, doing these "little" jobs. Hubby can't even wash up properly and seems to make a mess of everything he touches. He sleeps in a separate room, doesn't hang up clothes, put shoes away, make his bed or even open his curtains. I struggle to keep the important things clean and as much of the living rooms reasonably tidy but hubby thinks the floor is an extension of the table.
I gave up years ago.