It is possible to get too used to things being a certain way. Sometimes, people lose sight of the fact that it is possible for things to be different.
My example is with names. Many names have shorter or more casual forms. My name is Eugene, and I go by Gene. Ladies named Tamara often go by Tammy. I also know a Tamsin who goes by Tammy. And so on.
The reverse is not a sure thing. A shorter name is not necessarily a short form.
I work with a lady named Tammy. She has said that she has gotten into trouble with government offices who insist on knowing her real first name. Her real first name really is Tammy. For her, it is not a short form.
The world is a very big place. There is room for many ways of doing things besides yours or mine.