Shredding is a tool to bring out certain feelings. When executed with balls, shred brings out the aggressive side of people. Good shred makes me want to drive fast, fight, have aggressive sex, and anything else dealing with high levels of testosterone. If shred is not creating these or other feelings within me, chances are the shredder I am listening to just played fast for the sake of showing off and has no feel whatsoever. Good shred is awesome.
Bad shred is staler than bad sex.
Good shredders can make most styles of music sound good because they allow the listener to experience various emotions. To me that is what music is all about. Joy's tunes can also be heard on Hottest Unknown Guitarists, Ominous Guitarists From The Unknown and the forthcoming Legacy CD, due out this summer.