Wallpaper can hide imperfections on and in the wall. It actually comes in a greater variety of colours and designs then paint, and it can last up to 15 years, or even longer. The reason most people change wallpaper isn't because it needs changing, it's more they would like to change to a different design. This longevity means that, even though it can sometimes cost more initially than paint, it will pay for itself long before its needs replacing. Hope you found this helpful. Stay tuned for more helpful tips and tricks!