Funny thing, I loved Starcraft, one of the two RTSes I really got into (the other one being Dawn of War), but I'm not that inclined to play Starcraft 2. I think the main reason is that singleplayer campaigns in RTSes are usually not that interesting, and I know nobody who will play multiplayer with me. All my friends either play FPS or MMORPG, and I refuse to play against people I don't know.