Low number of cables has also been one of the points of appeal for the iMac, to the point that it was a focal point of marketing for the original model. For the average person's setup the current model only needs a power cable.
Of course, but those cables (or more likely, just one cable) can be stashed away in a drawer 99% of the time. The bundled keyboard and mouse/trackpad can go months between recharges, especially with lighter less frequent use that something like a living room or kitchen machine might see.
