I don't want a "general-purpose VR headset". There are already many devices described that way (that work well enough for that purpose.) I wanted something built exclusively for the extreme requirements of gaming, and I feel this acquisition is going to distract the Oculus team from that. Facebook has no experience whatsoever in that domain, and the only way I see Oculus benefiting from this is the huge cash reserves…
There's a lot of infrastructure that a gaming company needs in 2014 that doesn't have that much to do with Oculus's core gaming focus and that Facebook has very direct experience with. Look at how long it took Sony to get remotely competitive with the Xbox's interface; look at powerhouses like EA and Nintendo embarrass themselves year after year. System UX, payments, network scaling, "social", building a customer friendly game marketplace. I don't think these are the areas Luckey, Carmack and company can't wait to work on in the morning, but they're perfectly suited to Facebook.
In a better case scenario, I can see Facebook (or Apple or Google, to be fair) helping Oculus build another Steam competitor years sooner than otherwise imaginable. Imagine if there were two brilliant companies competing to push the envelope on Linux gaming.