Are all old people the same?

I don't understand why people get naggy when they are old? Male and female are the same. Why do they keep repeat the same thing over and over again. Not once but more than thrice. I can stand it when they repeat 3 times but anything above that will got onto my nerve. Argh!!!

I know I can't tell them to stop cause they couldn't control their action either. They also don't wish to be labeled annoying. So all along, I have to keep my mouth shut and head nodding continously only. How tiring can that be.