The durability of USB hubs that can be switched on and off depends on various factors like the quality of the build, materials used, and the manufacturer's standards. USB hubs that are of high quality and have robust construction and reinforced ports tend to be more durable and can resist wear and tear from frequent plugging and unplugging. However, the durability of USB hubs can vary, so it's essential to choose reputable brands and handle the hub with care to prolong its lifespan.