Nope. I barely have time to play games as it is, so I'm certainly not going to jump through hoops because Gabe Newell has gone power-mad.
It would be a stupid move anyhow. Is Gabe scared of competition or something? This whole Windows 8 thing stinks of 'Oh ****, Microsoft are about to ditch that GFWL rubbish and start selling games through a dedicated Xbox Live hub! We might actually have some competition!'. Right now, Steam IS PC gaming. Sure, there's other stores, but Steam is more than that. It's an end-to-end community. Xbox Live on W8 is going to offer something very similar.