Early discharge makes sense if you see the primary purpose of hospitals to do surgery, but after many operations patients need specialist nursing care and I am not convinced by the hospital infection argument. What about the dangers of home acquired infections?
Hospitals have hard surfaces that can easily be kept clean and staff also have personal routines over handwashing, short sleeves etc aimed at hygiene. At home we have carpets, curtains upholstery, pets, children, long sleeves, knitted garments. Our bathrooms and kitchens have all the clutter of day-to-day living and are not easy to keep at hospital cleansing standards.
The problem is that at the time, you are in shock over the event, even for planned surgery, concerned for the care and welfare of your loved one, bogged down in the minutae of care. It is only weeks, months, later when the crisis is over that you realise just how 'out of sight, out of mind' the hospital discharge was.