Originally posted by gotohamish
People buy them because they don't want their mac connected - it's really that simple.
Imagine you have an 'Book - you want it online, wirelessly, you'll need a base station if you don't have another computer, and a base is much cheaper than a second computer!
Alternatively, people might buy a base because their desktop is in an area not serviced by their ethernet plug/network.
Quite obvious really.