Do you have nothing better to do than complain? All Nightcore really is: Pitch and Tempo Modifications to the original songs - this was originally done to bypass the copyright laws because you couldn't file a claim (at the time) on a derivative works of songs (which has since changed - at least in the US). The Original Music is Grandfathered in and you can still find MANY nightcore songs on youtube as a result; plus some people (like me) just like the fast tempo.
