Sorry Rachel, but the STATISTICS don't support your little fantasy piece.
Few people who are armed and end up using their weapon are injured or killed. Few have there weapon taken from them. In most cases, the perps end up either dead or running. Perhaps you should read the Cato Study over an 8 year period where it proves beyond any doubt that ARMED CITIZENS prevent criminals from committing these acts. That evidence is overwhelming.
As a victim OF a robbery, I can assure you, being unarmed is something that will never happen in my world!