It's rude to tell your spouse not to sing.
Kevin is working on a project at home when he hears his wife singing in the kitchen.
Kevin wants to focus on his project.
Kevin moves to a quieter room.
Kevin tells his wife to stop singing, so he can concentrate.
Kevin finishes the project and avoids discouraging his wife.
Kevin's wife stops singing for good, and so he never gets to enjoy it in the future.