Only if you care about your health and the health of other people who live in and visit your home. After all, cleaning the ductwork isn’t a cosmetic process, like painting the walls or installing new cabinets. It’s a quality of life issue. So asking if you should have the air ducts cleaned is like asking if you should have hot water in the house. Of course you should. It makes a huge difference in the quality of life for the people who live in the house.