Why do people use computer mice?
People use computer mice because most graphical user interfaces are designed to be navigated with a cursor that is moved with a mouse. Mice also typically have buttons that can be used to click on interface elements
Instruction: Why do people use computer mice?
Context: 
Response: People use computer mice because most graphical user interfaces are designed to be navigated with a cursor that is moved with a mouse. Mice also typically have buttons that can be used to click on interface elements