Stigma of rap? No not really...
I know for a fact that I couldn't sit in my room here listening to music without my subwoofer. That said, the 6.5s and 6x9s that came stock in there have enough bass to satisfy me (which isn't to say I don't believe in subwoofers, just that I'll sooner take a nice 4 speaker set + amp than sacrifice on the speakers [number or quality] to afford a sub as well)

Besides, who said I didn't listen to Rap or Techno?