Aging is the breaking down of your cells as they replicate. A copy, of a copy, of a copy, of a copy, of a copy......right? Just like a sheet a paper that you put through a copier, if you copy the copy then the ink starts to thin our and become distorted. Maybe?
Aging is when everybody around you suddenly become so unpardonably young and so disgustingly stupid, and those three steps in front of your house suddenly are so steep, and it takes so much time to make a cup of tea. And why suddenly everybody speak gibberish and in such a low voice on a phone? It's not nice, you know.