Unless you used some kind of everlasting paint, chances are, you will have to repaint your home some time in the future. If your home is painted properly, it might last ten years or so. But if the paintjob is not too clean then you might end up repainting your home within two years or so. I am sure that nobody would want the hassle of having peeling paint after just two years. It would be like
bean bag chairs exploding as you plop down on them after just a few months of use. So before you paint your home, make sure that you have a clean surface to work with. Here's a
good article to help you out with that.