This will most likely depend on the type of fabric you choose to go with for your slipcovered sofa and your lifestyle. Some fabrics are thicker and durable, while others are more prone to wear and tear. If longevity is a concern for you, consider a sofa with a replaceable slipcover. If one starts to look a little worse for wear, you can simply purchase a replacement for a brand new sofa look. If you have children, this also means your slipcovered sofa may not be able to ward off stains for a prolonged period of time. This is when it's good to have extra replacement covers for a quick cleanup to preserve your couch longer. It might even save you money in the long run.