rofl I remember when they came out everyone was like ooh that's dead clever!!...little did we know in a few short years they'd be rendered obsolete because everyone would own portable telephoning devices!!
also, tbh...just how flipping dirty do you get?? I mean when I get in the tub its never like I am laying in a swamp of mud and assorted detritus because I shower & bath at least once a day...if you only ever have an annual bath then yeah it'd be raaaaaaank.
I can never get my head past thinking that the water in the bath has been swirling up beside your crusty, shitty bum hole which you then wash yourself / your face in.