“I am not invisible,” my new neighbor told me at a cocktail party not too long ago. “And I resent being treated like I am.”

She was discussing her shopping experiences. Explaining that it really irks her when she walks into a store and the saleslady rushes to help two young women behind her, while acting like she’ s not even there.

“My money is just as good as theirs. I don’t get it,” she complained.

But she did, and so do I. The older you get, the more people’s attitudes about you chan...