Dovid HaMelech: The words “spinster” and “old maid” aren’t used in the English language anymore. These individuals are called singles.
Many single men and women chose to remain single.
I know single women in their 20s who look, dress and think like they are in their 70s and 80s. I know single women in their 40s and 50s who look, dress and think like they are in their 20s. It’s how each individual, man or woman sees THEMSELVES. That is what they project to the world.