I think it is reasonable to state that the average cyclist is not spinning out a 50-11 on the flats; maybe with a 25mph tailwind.
But sure enough going down a double digit grade; that does take a good deal of the effort out of the equation.
John
Edit added: The one valid argument was keeping one’s legs moving going downhill in cold weather; which seems like a very good reason.
Last edited by 70sSanO; 07-02-21 at 07:21 PM.