also,
as for us "liking distortion" that is only partly true, 2nd order or even harmonics yes, our ears actualy produce it, as for 3rd and higher orders ie, 5th 7th 9th etc, even small amounts are objectionable, that is why for eg we can tolerate badly designed single ended triode amplifiers producing sometimes in excess of 10%[low order] distortion and forgive them for it for the benefits they bring in musicality...
anthony,TD.