Keep your original discs, even if damaged

[slydways]

If it is legal to make one back-up copy of your cdg's... why do you have to keep the originals....dont you have the right to sell or give away your originals and still keep your copies? Why would you have to "prove" you bought the originals or have them at home? I thought we were considered "Innocent" till proven guilty.Isn't it incumbent upon the prosecution to "prove" that you have "illegal" copies instead of "legal"copies?