Tomorrow is my oldest son's birthday. When he was born I could not imagine myself being as old as he is now. Everything beyond thirty was senility.
Somebody mentioned on Facebook today that their students were in elementary school when the first Harry Potter book came, as an example of ageing anxiety. I am not impressed. When I started teaching, most of my students were older than I was. Then they were my age. Then they were my children's age. Now they are just slightly older than my grandchildren.
"When Mozart was my age he had been dead for more than twenty years" (after Tom Lehrer).
I am older now than my granny was when I was a child. I remember her as very old.
I don't mind, but it just feels odd.