You should be careful handling cds, certainly. In fact you have to be careful not to scratch the top layer as well as the bottom.
That said, they are more durable than one might think, and yet oddly vulnerable too. Sometimes you can slide one across the floor by accident, and not one problem will ensue, and sometimes you can just put a finger on the playing side it seems and get a skip.
Also some players are very sensitive to skuffs and scratches and others aren't. . . .
Best to just be careful and respectful of the silver discs!