Nearly every household has them...
...dangling from the sockets of our energy addiction, sucking precious electrons from our already strained electric grid.
Parasite, thy name is wall wart!
Design engineers, please be more intelligent about your stand-by power management. There are options and alternatives. For example, some low-power control to run off capacitors and detect (and supply) the initial current when a load is applied. It will probably cost a buck or two per unit for the additional components, but you'll be saving the end consumer much more in the long-run.