The empathy from this thread has been a welcome consolation, so a sincere thanks goes out to everybody who offered advice, sympathy, encouragement, and even offers of equipment. This kind of tragedy strikes a chord (not Am, I think it's D#dim) among musicians, any of whom can imagine themselves in my position.
Think of all the times you momentarily left your van unattended while packing out from a gig. Or how many times you trusted a venue to keep your gear overnight, or checked an instrument into airline baggage, or left your stuff at home when you left town. Or left your gear in your car while you went to eat at some sketchy truckstop diner en route to a gig. How many times have you lucked out?
If I sound paranoid, it's because I am. Paranoid and angry.
Fortunately, nobody has crossed me during this past week; I genuinely fear hurting someone. Me, the easy-going pacifist. Those asshats next door have undone a decade of self-prescribed LSD therapy in the 60's. Love thy neighbor? Ain't happenin' this week.