Dentists choose treatment plans based on many different factors. Some of these factors have nothing to do with clinical data.
As a patient, your dentist should go through the different treatment options with you so that you understand the treatment itself, and the long term maintenance required with that selection.
Keeping the tooth by performing root canal treatment and a crown may mean that the tooth may still crack further and require extraction at a later date.
Removing the tooth and replacing it with an implant may mean that you may require treatment for peri-implantitis, bone loss around the implant and you may ultimately need the implant replaced later on.
You should choose the treatment that has long term maintenance/remedial cost that you are comfortable with and can afford. Your dentist can guide you in these matters.
