Whether you like his music or not - he has changed the way we listen to rock and pop music including, without a doubt, music you do like - be it Indie, Rock, Hip Hop, Soul, Funk and so on.He is the most sampled artist in popular music today.
To use an example I do know about...many years ago at a time when Flea was considering leaving the Red Hot Chili Peppers, the way the lead singer Anthony Kiedis changed his mind was to say something like "...I'm going to be the James Brown of the 90's..." on this Flea stayed.
As I say he changed pop music forever - and his music came from genuine suffering and feel.
A great is gone.