Examples are numerous that show in many instances that retreating, running, or defending, are more dangerous than attacking back.
“Stand your ground” is an extension of the “castle doctrine”, the right to defend the domicile in which you reside and all appurtenant structures on what is defined as the parcel where the domicile is located. “Stand your ground” is that mobile portion of location that moves with you as you travel away from the dwelling. It may be the blanket at the beach, or the vehicle in which you are traveling, or even the portion of the sidewalk which you are so proudly striding down.
“Stand your ground”, though, may be more important for its provision of at least partial immunity from civil actions taken against the protagonist by those acting on behalf of the antagonist. Therefore, the home invader whom you shot while he was pillaging your residence has little resort to a civil judgment for injuries done to him while engaged in criminal activities or fleeing the scene.