After reading through this thread and seeing the comments, I will say that the fact that you were able to come away from it unscathed is a good outcome. I take it you're not a sworn police/peace officer and don't have the responsibility/priority to Protect and Serve the public, so you did your job by looking out for #1.
From what others have posted, you should take away an important lesson from this situation like having your phone/CCW more easily accessible to you in case you do need them. Also, calling 911 from a safe location is a good idea too.
@ sigcurious - what you experienced was the bystander effect.