Valve is a gaming company who gets VR so it would make a lot more sense for their core business.
Listening to Palmer Luckey talk about how the headset won't come out before its ready makes you think they have a very specific vision they want to execute, as does reading technical stuff about their technology. God knows what will happen now with Facebook. I was unbelievably excited about what Oculus could do for the state of the art in gaming, executing their vision independently. Who knows what having a corporate owner with unclear ambitions will do. I hope Carmack and the other technical guys jump ship and execute the original vision if Facebook meddles too much.
Working with Valve products, they are so god damn open. Api for a whole load of stuff, no serious attempts to lock down their non documented api/interfaces, games built on open technologies (all Dota network traffic is protobufs etc), and serious commitments to open source tech long term
The HN reaction to Google's acquisition of Nest makes me think the comments would be equally negative.
I'd be hard-pressed to think of a buyer that WOULDN'T lead to negative reactions on HN...
Apple: they'll make it iDevice-only, and also it will disappear for a year if not longer until Apple feels it's good and ready
Microsoft: they'll screw it up
Etc...