Is USB the New Outlet?

I just got a refurbished Garmin Edge 705 (review to follow) along with a bunch of craptastic free sample gadget from China. The thing they had in common? Instead of having dedicated chargers, they all came with an AC/DC converter to USB.

It used to be that you were flooded with dozens of different chargers. After a while, you'd forget which charger belonged to which gadget and you had to label them. Every time you'd move, then, you'd have this monstrous mess of chargers that you couldn't get rid of, because you had long forgotten what gadgets they belonged to.

There were craptastic adaptable chargers with dip switches for current and voltage and different tips. You constantly risked destroying your gadget by choosing the wrong voltage, so they were really just an item of last resort. It was a nightmare.