I've had two root canals. One in 5th grade, and one in college. Local anesthesia only. It was a long painful process. Both teeth eventually failed anyway, and had to be pulled, and replaced with implants.
So my opinion is, if you can afford it just skip the extra misery and have them yank it out and replace it from the start.
I can't be the only person who instinctively trusts a product/brand less the more I see ads for it.
The biggest example is alcohol brands. It's almost guaranteed that the more advertising a brand does, the more middle-low quality is. (There will always be the ultra-cheap option with no marketing of course.)
It's mind boggling to me that in this modern interconnected era that this isn't obvious to everybody.