Killer Mike said a lot of true things in this interview but this one is the most relevant to rap music.
How do you tell musicians who escaped the grips of poverty that they should rap about social issues when they’re trying to buy their mother a house? They’re trying to get the hell out of the ghetto themselves. The people that they’re rapping to and rapping for, they experience five, six, seven days of hate, of pain, of psychological torture. They experience that. They don’t even wanna hear about it anymore sometimes. They just want to escape. They escape through the fantasy of “I drive a big car. I have a big house. I’m a boss. Nobody can tell me what to do.” That music can be as therapeutic as recognizing there’s a big problem and speaking about it.