I'm still of the camp that believes that bat rings still serve a purpose, albeit a very narrow one now. While they are no longer necessary to detect dents in a bat, they can be useful to spot a bat that has been poorly painted or has deceptive decals.
This won't stop a bat that has been visited by a decent enough bat doctor, but it can catch the fly-by-night bat doctors.
I still keep them in my bag. Feel free to send them my way.
