that's a story repeated
over and over Mike, Robs mum, 5 kids and her parents, told of how you couldn't see the kitchen floor for piles of washing, sorted in loads for the hotpoint twinny, plus the whites boiling in the copper. Seems like madness to us, but it was all done in one morning, and being the 60's/70's having that spin performance in a 2 up 2 down with no central heating you can see the benefits over an indesit auto at least in the winter. She told me once the wash stopped working, called the shop to bring a motor and it was back up and running to finish the wash. She of course did take to the automatic as the family moved away, but in my view, never got away from the size loads washed in the twin tub, so always seemed to under load the automatic.
Another I'd heard of, the husband had thought not to repair the twin tub, so had an auto plumbed in, after one load,she had the shop deliver another hoovermatic and husband came home to see the automatic on the drive awaiting collection, `I can't be waiting all that time for one load' So whilst we may not understand it ourselves, not all housewives were slaves to the twin tub.