What are the differences between a belt and chain drive system in a bike, and which one is more suitable for long-term durability and performance - belt or chain?

A belt drive system in a bike uses a belt made of materials like rubber or carbon fiber, while a chain drive system uses a metal chain. Belt drives are generally more durable and require less maintenance than chain drives. They also provide a smoother and quieter ride. However, chain drives are more common and easier to find replacement parts for. In terms of long-term durability and performance, a belt drive system is generally more suitable.