The answer to 'how long does bathtub last' is that a well-maintained bathtub can typically last 10-15 years, or even longer with proper care. Bathtubs are made from durable materials like porcelain, acrylic, or cast iron, but their lifespan depends on factors like usage, cleaning habits, and any damage or wear over time.
With regular cleaning and maintenance, bathtubs can remain in good condition for many years. However, over time the surface may become worn, chipped, or discolored, and the sealant around the tub can degrade. At that point, it may be time to consider refinishing or replacing the bathtub to restore its appearance and function.