I like all my things to be legit. I don't even like buying 3rd party items (eg logitec controller), i don't know why, i just have a thing for only wanting to own the official product.
This is not just for games consoles, it is for everything. For example, if i bought a car and wanted to add a sunroof in it, i would only ever consider getting a sunroof made by the manufacturer of the car.