Yo jazz is music at its most theoretical, most experimental. Only the best of the best can do it well and it's not always easy to listen to. It's not always designed to chill with, sometimes it's more akin to the feeling of learning something new than the feeling you get listening to music. Lots of times i listen and don't enjoy, never come back. But sometimes i listen, initially don't like, but come to appreciate the idea and come around. I think because jazz is so experimental it's ok if you don't dig it. Even if you don't, it drives the rest of music and you'll eventually hear its impact on all the songs you love if you take the time to learn to appreciate it.

Check out the Miles davis - kind of blue album. Immensely listenable and chill. If you like it, check out the extended versions or there where Davis talks about how he arranged it and put it together.