A way to eliminate spiking?

Spiking is when you connect the plugs together and then a pretty big spark pops out. This is very very harmfull for your controller...longer wires serve as a larger vector for spiking as well.
So what would happen if I install an on/off switch in one of the wires? This means that even though i connect the wires, the circut is not completed because the switch is in the 'off' position. And then, when you are ready, you flip the switch to the 'on' position and the circut is completed without any spikes! This should save the life of your controller by ALOT.
Any views on this idea?