Why do passengers complain about the airline discontinuing the supply of pillows & blankets on board flights?

Why would you want to use a pillow or blanket used by a previous passenger who may have coughed, sneezed, spit, or Got knows what else? Why not travel with your own? Airlines have less than an hour, without a delay, to turn a flight and get it ready for the next group of passengers. Because of cut backs, removing pillows and blankets and replacing them with new ones are left in the ancient years.