Sooner or later there will be Dawnguard for PS3, don't worry. But what is amazing to me is that you people are shocked that Bethesda is ignoring the PS3 issues. I mean, when I see "buy a PC, then game and download DLC" as a "fix" to a problem... I'm really not shocked. Not at all.
Oh, and about games "better than skyrim" - Ultima IV-VII and Gothic 1-3 for example. You don't need a powerful PC to run them and these games are fun.