Painting the interior of your home is advised to do in the event of selling. It increases the ROI and creates a more competitive home for the market. If you are not planning to sell it can also change the look and atmosphere to being more warm, welcoming, and enthusiastic. It can also conceal stains, cracks, or drawing on the walls. Lastly, it can decrease dust and mold and make the walls overall easier to maintiain in cleanliness.