Id consider getting a pair. The Google Glass was purely for business, so Im sure Facebook will add some fun and social features. And regarding privacy issues, were still using Facebook, right? I think everyones just being paranoid.
Yes, people are still using Facebook but the number of users has been steadily decreasing. What makes you think that their AR glasses will be well received?
And don't let me get started on people getting wary of the company's involvement in AI developments...