I like graffiti because it is very diverse. There are many forms and styles of graffiti. Graffiti can be anything you want it to be. You can do it for the passion or thrill. They are no rules or you can choose to make up your own rules. Its forever evolving.
No schools, playgrounds, churches, houses/cars, mom and pop shops. Everything else is pretty much fair game. I would rather piece on a chill wall, but catching bombs and tags is fun too.
I gonna go with...it doesn't matter what music your into, its just some people have style and some don't. You have to want it, to become a better writer.
and of course there is always going to be people who just want to tag wack shit and destroy things.