One reason would be to save resources
All raw materials and all energy are provided by our blue planet Earth, but they are NOT endless.
Unfortunately, most of the provided raw materials and energy are not usable as they appear in Nature and are spread globally in deposits.
Men need to use a lot of energy and resources to produce the materials we need. We have to collect, clean, concentrate, and transform these resources to generate primary raw materials that are usable for people and industry.
Using recycled materials reduces the amount of energy
and reduces the amount of materials we have to dig out!
http://www.recycle.co.uk/
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