Copper is ductile
Compared to other metals, copper is very ductile, meaning that it can be drawn through a tiny hole into very fine wire without breaking. Refining improves the ductility of copper so that extremely fine wires can be drawn. Impurities increase the chance that the wire will break during the drawing process.Copper conducts electricity

Only silver conducts electricity better than copper, traditionally Silver cost 40 times the price of Copper. Refining improves the conductivity of copper by lowering the electrical resistance.Resistance is like friction to electricity, and it causes energy to be lost as heat in poorly conducting wires. Improved conductivity means more energy is delivered to the desired destination when you flip that switch or turn that dial.

Copper is recyclable
More than one-third of the copper refined in the United States comes from recycled material. That’s a higher recycling rate than aluminum! Scrap copper comes from manufacturers of all sorts of copper and brass products. The copper is melted and cast into anodes and refined just like ‘new’ copper from the mines and smelters.