Hyperion, what am I missing.

I've got the book Hyperion, I've had it for ages and been slightly intimidated by the size but finally got around to reading it recently and I just... Don't get it. What's the big deal. I've just come off reading a listicle that had it as number one but it didn't really give me any clue as to why it was good other than a load of gush about how amazing and inventive it is. I got about a quarter of the way through, enough to read most of the first 'tale' and I get the allusions to Chaucer and Dan Simmons seems a bit too obsessed with Keats for my liking but to each their own. Nevertheless I couldn't get into it so I decided to read the synopses for both the rest of the book and the rest of the series to see if it 'went anywhere' so to speak. What I read after baffled me even more. I genuinely feel I SHOULD like this book so if you're a fan can you tell me what makes it so good? If possible I'm looking for tangible parts like actual parts of the writing, plot, characters, themes but I understand if it's simply a subjective experience