Root canal or extraction?

I don't know what advice I could possible give.
Two years ago; My teeth were all brand new, as the dentist had made them so. Those visits were covered 80% by my wife's insurance; so I just got it all done.
One year ago, they were fine. Then,
About seven/eight months ago, after my wife retired; one after the other, they began to crumble, until today there might be as many as three intact ones left.
Here's the thing, there is almost no discomfort involved other than the two or three open molars with their big juicy nerves exposed. Since my wife is retired, and now, at 70 so am I; there is barely money for the essentials so teeth are not on the list. Last year at this time, I was only missing about 4 teeth. Soon I won't have 4 left to chew with. I got three left in the front and none of them meet, so I have to cut everything into tiny pieces to be gummed by those without e.xposed nerves, behind them.
The point is this;
Don't let this happen to you, it's way beyond sucking. I could and would like to say more, but if I did, this thread would go to the N&P, lol.

And BTW I've suffered thru 3 or 4 root canals, and it's never gonna happen again. The first two were done in the early 80s on insurance. I said then that it would be a cold day in hell before I'd ever do another.
Then IDK about ten years ago, I had a front tooth go down, and Root canal or extraction were my only affordable options. Since this tooth was in the front and part of my handsomeness, I gritted my teeth for a root canal. We got past the freezing part ok and so it was looking like easy street. Well, nobody knows where the freezing part went that day but it might as well have been water. So the sweetheart dentist put more in, and then more again, and then some more. My azz fell asleep, and criminy my toes were tingling. Finally, my face feeling like a basketball, she did the deed. It wouldn't be until ~4 days later before all the freezing came out, lol. So on that day, I said for sure, never again.
Well, a few more years go by and then, another front tooth went down, and the words I dreaded were spoken once again. I said not a chance doc, clean it out and put a temporary repair on it. If it doesn't hurt, you can put a permanent fix on it later. Which she was able to do some time later. But for years, I could always feel there was something foreign inside that tooth. Now it doesn't matter any more cuz that one, as well as several others beside it are all busted up down to below the gumline. I got my own personal calcium dispenser now, but not for long; Ima hoping the rapture comes soon. lol.