Namibia, with its 2.1m citizens, produces of 3 000 tons of waste daily.
You should recycle because if you throw something away, it is no longer useful, it ends up in a landfill, is incinerated, or in some other way contaminates the environment.
If you recycle something, it can be recovered and become material for a new product, plus it does not go to into the waste stream.
There is a real global problem with too much waste being produced by human beings. We produce so much synthetic waste that we need to dispose of it in other ways without contaminating the environment.