Every tooth of mine which had root canal done, cracked in the root area. That can not be repaired and infection sets in along with tooth ache. I had 20 teeth pulled, all had root canals. AVOID ROOT CANALS! Floss after every meal and you will never need rood canals. I am doing that on my remaining 9 teeth, and they are all healthy as can be.
Yes
If you got frostbite and/or gangrene on one of your fingers, they wouldn't drill it out, fill it with heavy metals and antibiotics and put a fake finger on top leaving you with a dead rotting finger underneath.
Of course they wouldn't, but that's exactly what they do with a root canal.