I received a waitlist email a couple of weeks ago. They said that final decisions would go beyond 15th, maybe for a couple weeks past at least. Did you receive one as well?
I completed my MA about 15 years ago and have been teaching ever since. Knowing that I've been teaching on the university level during that whole time and getting consistently rejected for PhD programs is a hell of a feeling as well. You shouldn't feel like an imposter. You're part of the club, just membership is tiered. Resentment is normal, just maybe not healthy. I know it isn't for me!
I see on the spreadsheet that University of Georgia's actual date for sending out results was January 22nd. Has anyone heard from them . . . I haven't.