well, it's because the radiators we have are unnattractive, and so replacing them with more stylish ones is another option.
however, i'd like a narrow console table / shelf in the hall, which we've also been looking in to, but the rad cover would seem to kill two birds with one stone (and therefore spend).
also, getting a console table the right dimensions is proving near impossible. it would have to sit over the radiator (there's no other place for it) and then you'd still be able to see the ugly radiator anyway.
hence landing on rad covers as a solution!
same situation in the kitchen. ugly rad, want a shelf/console... and so on.