Without blood into the pulp, it is impossible to provide a little nutrition. The dentin is a little bit more brittle, whether you leave it or not. So I suggest you do a radical root canal to avoid future pain.
I guess you're afraid that the loss of the pulp of the tooth will bite the tooth, but the main reason for the loss of dental pulp is not the loss of the pulp, but the loss of the tooth itself. If your teeth aren't very bad, they're actually dental fillings. But that's a very small situation, and most of the time you have to make a porcelain crown to protect the remaining teeth.
