Well as at least one human I can say there is no form of music I dislike more than Jazz.
I'm a jazz fanatic. Love Jazz from Coltrane, Oscar Peterson, bebop, blues, swing and even Fusion. However, I never acquired a taste for free form, avant garde Jazz. My wife on the other hand never enjoyed it. Her most common question is "why are there so many notes?"
If your favorite musician is the Boss or hard rock and your musical training is mostly made of attending rock concerts then Jazz may be a foreign dish. But as someone who has studied jazz recordings, spent thousands of hours practicing jazz improvisation patterns and loved listening to performers pulling tremendous solos out of the air, I can say - Jazz is as much mental gymnastics as a wonderful intelligent musical style. It takes a great ear, intuition, heart, soul and practicing day and night until the music just clicks. And a few musicians can take it to an unbelievable satisfying listening session where I am simply blown away with the alternate melodic passages of powerfully gifted performers.