We aren’t actually using on or off either, but rather different levels of electrical charge. If there is more electric charge past a certain threshold being picked up, it’s interpreted as a 1 or on, if it’s beneath this defined threshold, it’s interpreted as a 0 or off.

1 and 0 are abstractions, not the physical reality, which is messy and analog. We are forcing this analog reality into a binary state by classifying it.