Why do people like Jazz music?

Jazz has changed a lot over the years.....Dixiland, Big Band, Bop Hard Bop Acid jazz, Fusion, so many sub catagories. I think some people just don't like the vocabulary. When I was little I couldn't hear it. Now i love like Thelonious Miles all of it but some more than others...the great thing about music is you are free to dig what you dig....but just because you don't enjoy one type of style doesn;t mean it has no merit. jazz like blues and r&b has influenced all other styles. And other styles have gotten stuck in formulas from time to time also. Most of what pes for Pop or rock (which i love also)is pretty predictable. Still you may have a point that today jazz doesn't seem to have as many people writing entirely new songs. Standards seem to come out of Pop/Rock and then get treated. I get that point. maybe the next wave of Jazz is just around the corner.