People fear root canals because they assume they are painful. Actually, most people report that the procedure itself is no more painful than having a filling placed.
Root canal therapy should relieve the pain you feel. Until your root canal procedure is completely finished -- that is, the permanent filling is in place and a Crown, if needed, is in place -- it's wise to minimize chewing on the tooth under repair.
Saving your natural teeth is the very best option, if possible. Your natural teeth make it possible for you to eat a wide variety of foods necessary to maintain proper nutrition. Root canal therapy is the treatment of choice.
The only alternative to a root canal procedure is having the tooth extracted. The tooth would then be replaced with a bridge, implant, or removable partial denture to restore chewing function and prevent adjacent teeth from shifting.