I love rap and hip hop music. I love the beats and bass lines, and the rhythmic beatboxing.
I like a few songs, but not many. I find they use too much explicit language for my taste.
Hip hop is actually characterized by nine elements, but only four of them are considered most necessary to understand hip hop musically.
What kind of elements are those, I don't think I've heard that before.
It is not just music, it is a subculture and art movement. There is a lot more to it than the vulgar lyrics. 
Oh I'm sure it is, but why do they need to use that kind of language to express themselves?
Well, hip hop was developed by inner city African Americans. They lived in ghettos, so that's most likely why.
Oh I see. I guess I kind of like the old school rap, maybe in the late 90's.
graffiti writing. Other elements include sampling beats or bass lines from records (or synthesized beats and sounds), and rhythmic beatboxing. While often used to refer solely to rapping, "hip hop" more properly denotes the practice of the entire subculture. The term "hip hop music" is sometimes used synonymously with the term "rap music", though rapping is not a required component of hip hop music; the genre may also incorporate other elements of hip hop culture, including DJing, turntablism, scratching, beatboxing,
rock or blues.
Hide of Greeeen openly described their music genre as J-pop. He said, "I also love rock, hip hop and breakbeats, but my field is consistently J-pop. For example, hip hop musicians learn 'the culture of hip hop' when they begin their career. We are not like those musicians and we love the music as sounds very much. Those professional people may say 'What are you doing?' but I think that our musical style is cool after all