Most airplanes have a "too slow" warning as well, e.g. a speed at which the gear ought to be down because there isn't any other reason to be going so slow excep

Most airplanes have a "too slow" warning as well, e.g. a speed at which the gear ought to be down because there isn't any other reason to be going so slow except to be landing. The speed also factors into gear retraction, e.g. you are not going fast enough to fly, so gear retraction will not be actuated even if commanded.