The form of language is dictated by the preferences of all those involved in the conversation, the conventions of their shared culture, and other context. For a person to insist that everybody involved bend to his sole preference is unrealistic.
It's a combination of what you want me to call you, what I want to call you, what the conventions of our culture suggest that I call you and what's convenient to the context, actually.
To address the first one. You assume that everybody uses language the same way that you do. That conforming to your demands in this is as preferable for them as it is for you.
I worry about money.