I don't like the idea of having the root canal in my mouth but I have had one for about 25 in one of my front teeth. The tooth feels like a normal tooth. I can even change the crowns if I don't like the look or need to do some orthodontic work. The only draw back is if the tooth rubs against another tooth it will wear out the normal tooth.
Maybe their is another better alternative but I don't know what it is. What is your other choices? A bridge, implant, or denture?
If I suspect I'm harboring bacteria in my root canal I can always pulse it with a Beck Magnetic Pulser. I've considered having it extracted but only if their is some other better way. Maybe they have something better now if you find the right dentist.