I have a very eclectic music collection that includes what I consider to be some great jazz (Miles, Trane, Bill Evans, etc.). My musical interests are very far-ranging. In fact, I would say that I like most music except Opera and Rap. But... I don't like everything. Far from it. I like the best of the best, the creme de la creme. Genius.
The reason I don't own more jazz and listen to what I do own more often (and again, this is just me) is that so much jazz seems to lack a definite personality. So much of it is just "yeah, me too" churning out the same stuff out by the yards.
For example, Chick Corea in particular is someone who seems intent on giving me everything he knows in the first 8 bars of each tune. I always feel like it's the same old schtick, only the album and song titles change.
It's worth mentioning that jazz isn't the only genre that does this. In fact MOST genres are like this... "me too blues," "me too country," etc. It just bores me to tears.
In fact, I just got done listening to the new Trevor Rabin record, with Tal and Vinny no less. The first few songs seemed fairly fresh and held my attention, but by the end of the record I was like, "More of THIS? C'mon!" I sure am glad that I downloaded it free rather than bought it, because it is now deleted from my collection, but that's a whole other conversation.
Truly GREAT music is a relatively rare thing IMHO.
I think George Santayana once said, "Most people believe genius is as common as dirt, when it is as rare as love."