Clutch pedal down at traffic lights ?

[rrod]

When you are stopping at traffic lights, do you keep the clutch pedal down to the floor ALL THE TIME you’re waiting for the green light ? Why or why not ?

I have heard conflicting arguments about this, and have never figure out the correct answer.

I have a book that says “Once engaged, a properly functioning clutch transmits engine torque to the transmission without slippage.”. The way I understand that is, if the clutch pedal is completely downed to the floor, then there would be no friction disk wear. But there could be other components receiving unnecessary stress. Are there ? . Or my logic could be completely wrong. Anyway what are your thoughts.