Product marketers and advertisers used to (and as far as I know still do) write "biographies" of target customers to help decide what messages to send, what the packaging should look like, how and where it should appear in the supermarket etc.
They'd look like, "Jane, 35, has an undergraduate degree in a technical field, and is married with two kids. She exercises a few times a month but wishes she could do it more..." Then they say, "So would Jane be drawn to this color or is it too opinionated for her?"
This isn't what a user story is. This sounds like a persona, which is a thing in product management. But it is not the same thing as a user story at all.
A user story is something like "Customers want to see the items most recently added to the shop". Or, in Connextra form:
As a customer
I want to see the items most recently added to the shop
So that i can stay abreast of developments in fashion
They'd look like, "Jane, 35, has an undergraduate degree in a technical field, and is married with two kids. She exercises a few times a month but wishes she could do it more..." Then they say, "So would Jane be drawn to this color or is it too opinionated for her?"