I considered it because its probably the best community out there of proper players. I played there back when the game first came out and until a quit and took a break before BC. I raided with fallen chapter.
However, because my mains where on frostmourne, my misses mains where on frostmourne, my brother & brother in laws mains where on frostmourne, it just seemed easy todo it there. Plus i would have no cash on blackrock, and i needed lots of cash to get my mounts.