well you completely ignored my post then. that's simply a description of why people buy external harddrives.... and a pretty bad descriptive reason at that.
even a retarded baby could tell you that.
i download a 1000 films, i'll whack em on a 1tb harddrive, like i have at the moment, and then buy another 1tb harddrive when that is full. they all stay in the pc, all in once place, away from accidents and whatnot, and nothing that goes in a pc short of a solid state solution will be faster for the OS to access short or giving my RAM a bit more bandwidth, but that is going to barely help.
whether my harddrive is inside the computer, or outside the computer, it doesn't make a difference in speed surprise surprise.