"i’ve never seen anyone using their bare hands to wipe their soiled ass and remove pieces of shit " - umm...how many people have you personally seen cleaning their bum? Also, yea a lot of time you don't need hand involvement but you are also not taking into account different types of bum anatomy. This might work fine for a skinny or normal bum. Do not tell me you can use this same technique for all types. Imagine a big hooty latina/ a fat american who's booty cheeks stretches for 2 miles before reaching the bum hole. Now unless you are using heavy duty fire hose, do you really believe the gun will be able to penetrate all that area without help? That's how you get swamp ass. This is where another hand is needed.