This is how lazy we humans are

I know you ppl (including myself), dread walking up the stairs but how abt walking down the stairs? Do you still rush to the escalator and join in the bunch towards the opening of the escalator even though there is a nice flight of stairs going down? You have gravity by your side, why not just go down the stairs and work those feet?

Are we that lazy till we are able to create an escalator for just a vertical height of 834mm?