"First of all, anybody interested in melody is out of luck.    Melody is hugely important to me (and others, I suspect). Too bad for us.
Then there's subject matter:    misogynistic lyrics, attacks on the police, glorification of weapons and crime--and to top it off, foul language.   There are exceptions on the subject matter issue, but in general that's what it is."

Lack of melody and attacks on the police can also be applied to punk but I have a visceral attraction to punk. Then again, punk is not misogynist and certainly not racist. It's loud, abrasive and noisy but it is meant to express anger and disgust at the world as it is. I recognized elements of dada in punk right off and maybe that had something to do with why it appeals to me. But visceral reaction to punk is that it makes me want to thrash to it whereas my visceral reaction to rap is that it makes me want to turn it off.

I don't think we should lump rap and hip-hop together either. Hip-hop can actually be very melodic. The thing is that both rap and hip-hop are non-musical ways of making music. When you get musical people to play it, you get something musical but when unmusical hacks take a crack at it, you get something that sounds like unmusical hacks fucking around but they make a lot of money while doing it. Consequently, rap has become the reality TV of musical genres. Reality music. Maybe that's what they mean by "keepin' it real."

"So, fine, lots of ballads glorify crime and attack authority.   Na und? Actually, the criminal often repents at the scaffold;   the ballads are often quite moralistic.   So, again, there may be exceptions;    I don't think Sam Hall is sorry for his deeds.   Nor the main protagonist in "Adieu, adieu". And there's lots of misogyny in folk."

For me, it isn't so much the subject matter. It's how the music strikes me on a gut level with no intellection involved. It doesn't matter what rap's subject matter is, I simply don't like it at a gut level. For all the ideas and chances for innovation present in the music, they remain virtually unexplored and always will because the fans are too unsophisticated to accept innovation. They are perfectly content for it to remain the way it is. I'm not trying to be mean, I simply state a fact or at least what I believe to be a fact.