When Dawnguard was announced I was really excited and couldn't wait for it to be released. After it was released on Xbox 360 I was like

, fair enough, I'll wait a bit longer. Then the Steam summer sale hit, and I bought some sweet bargains, so I've now got this massive backlog of games to play and can't really decide which to start first.
So to be honest, after all this, I've lost interest in Dawnguard. The fact it's been released on the Xbox 360 has taken away any mystery in it's content, and Steam will see me playing other games for quite a while now. So while I'll inevitably buy Dawnguard at some point, it won't be on it's PC release, although it would have been bought on day one if it's PC release was the 360 release.