Products do not last forever; they wear out in time and are either recycled, reused or thrown away
It is important that designers think about how they can make a product last as long as possible and what can be done with the product at the end of its useful life
It is better for the environment if, rather than replacing a product at relatively short intervals, a product has a longer lifespan. This uses fewer materials. However, a longer lifespan also means that manufacturers sell fewer products