Rubbish. Tell that to Angie Dickinson, Raquel Welch, Kim Cattrall, Jacqueline Bisset, or Lauren Hutton. They all looked their best when they were in their forties.I prefer to look at the world the way it is, rather than engage in sentimentality about women still being attractive all their lives.
It's sad, but age takes its toll. None of us will look as good in our forties and fifties than we will in our late teens or early twenties.
YMMV.