●  General Purpose Outlets (GPO)
●  15 amp outlets (for spas, welders and other large equipment)
●  Weatherproof Outlets for outdoor and wet area use
●  Surge protected outlets
●  Suspended outlets

Extra power outlets can help to reduce clutter in the house by removing the need to run extension cords and power boards.

From a safety perspective, removing this clutter can reduce the risk of tripping / falling in the home.