All joking aside, I'd take the .22 over a rock. I'm not a "stand my ground from the git go" kind of guy. I'm not drawing and firing until that is my last resort. And when it gets to that point, any weapon is better than no weapon, IMO.
Remember, the objective is to keep you and your's alive, not gain universal internet approval. Time, circumstances and your own commitment will determine your hand gun future. Let it play out.
My suggestion would be to put some effort into figuring out where the weapon you have will inflict threat ending damage the fastest.