It is all right letting yourself go, as long as you can get yourself back.
People have this obsession. They want you to be like you were in 1969. They want you to, because otherwise their youth goes with you. It's very selfish, but it's understandable.
My mother has always been unhappy with what I do. She would rather I do something nicer, like be a bricklayer.
I'd rather be dead than singing Satisfaction when I'm forty-five.