The problem with ageing is that of course you don't feel any different inside and it's only when you look in the mirror that you get a shock.
That is so absolutely true - not that you have a problem yet, Milly! Trouble is although you (i.e. one, not Milly) feel just the same, you are perceived differently by other people, if they don't know you. It's very annoying. Society at present is very youth orientated, to the extent that people are squeamish about age and try to hide it, as if being young were some kind of virtue. You also hear people apologise if they imply someone is not young, as if they were accusing them of a terrible vice.