People who only listens to rap are some of the most open minded people

It irks me, that rap is the only genre where it is percived as "Bad" if you only listen to it. I know alot of people who only listen to rap, that has gone so deep in the genre, that they can apreciate most other forms of music. If you like death grips for example, you have already exposed yourself to alot of genres(rock, electronic, punk etc)