Meh.. I need them both. If the internet was like California, RDC would be Beverly Hills while DR is more like Compton.. While you may not want to visit Compton, I bet if you went there it would be entertaining to say the least.
To each their own. DR isnt really competing with RDC. Its a different atmosphere over there and if you like it then cool, if not then dont go there. To each their own. I personally like both sites and think they both serve a purpose.