Root canal or extraction?
Root canals are temporary fixes. A good and honest dentist will tell you that they have a life of less than 10 years. Anything over that is considered a bonus.
Trick is to find a good and honest dentist. Some are bad and some are dishonest. I had one that was both bad and dishonest years ago.
I just broke my last root canal last week. The crown came off when the tooth underneath broke. I think I did get more than 10 years out of it, but of the 4 root canals I've had over the years, this was the last to break. I've replaced them with implants.. Not cheap, but they'll last forever... I refuse to do root canals. I expect the implanted screws to be along side the other hardware in my ashes when they sweep out the furnace.
My advice... either pull it or do an implant. Don't even consider the root canal.