Hotels (part 2)

Why do most hotel chains insist on replacing the soap and shampoo during the middle of your stay? Who on earth complains that they’ve had to use a bar of soap for more than two days? Now obviously having your guests run out of toiletries mid-stay would be a bad thing, but why not just leave a spare set in the room? This would surely save the hotel a fortune in toiletries and be considerably less wasteful. Stop it!