Hip-Hop has it's legends, just like any genre of music. If you judge it from the stuff you hear on the radio nowadays, you are missing out on a whole lot of really good music. You mentioned Wu-Tang yourself, try checking out some of the really big names in hip-hop, A Tribe Called Quest - De La Soul - Nas - D.I.T.C - DJ Premier and MC Guru - KRSOne - Rakim and Eric B. I'm sure you would change your mind about Hip Hop being the worst genre of music ever.And hip-hop... don't get me started on the worst musical style since elevator music was invented.
You said you liked Jazz? Hip-Hop is really not that far from jazz, check out MC Guru's soloproject Jazzmatazz or basically anything with A Tribe Called Quest, they constantly sample old jazz records, and use saxophones or trumpets for the beats.
Just don't ignore hip-hop solely based on the stuff you hear on the radio, like Soulja Boy, Lil' Wayne or G-Unit (Sigh, MOP used to be great, why did they sell out?!), wether or not you fancy the genre is irrelevant, i'm sure you can appreciate the musical quality and skill of the MCs and DJs of the early 90's, this is really not a subjective question, it's a fact imo.