"Never job backwards. What might have been was a waste of time.

Older women are best, because they always think they may be doing it for the last time.
Older women are best, because they always think they may be doing it for the last time.
Older women are best, because they always think they may be doing it for the last time.
Older women are best, because they always think they may be doing it for the last time.