Dwight-
I work for a security consulting firm. We perform security audits at banking locations that have had "incidents" at their ATMs and after hours depositories. I can assure you that the individuals killed in upper class neighborhoods were just as dead as those shot in lower income areas. Something to remember- the criminals know who has the money. Why jack somebody at an ATM in a low income neighborhood when they can drive 10 minutes and make some real money. You can live where ever you want; the criminals are always happy to come to you.
"I'm always extremely aware of my surroundings."
You're right. The best way to survive a confrontation in to avoid it all together.