Damn, sorry to hear that. Ahh, crackheads. Gotta love em, except when they're stealing your ****. I have had similar odd things happen over the years.
When I was in college my car got broken into twice. The driver side window was smashed out both times. Nothing was ever stolen even though there were some things in the car worth stealing the first time it happened. The second time they actually left something -- a dirty sock in the driver's seat. My conclusion was that they wrapped the sock around their hand to smash the window and forgot to take it back.
Years ago, me and some friends were renting a house in a slightly bad neighborhood. One night we were having a small party, about 15 people were over, and we were all playing beer pong in the living room. Three crackheads kicked open our back door (which was attached to the living room) and ripped off everyone in the room at gunpoint. They took our wallets/purses, any jewelery we were wearing (the girls got the worst of it) and our cellphones. They took an Xbox console we had sitting there in the living room, but left the cables, games, and controller. They also ignored the brand-new $3500 42" plasma it was hooked up to
After robbing us they just ran off in separate directions. Combined, they ripped us off for about $2,500 if you just factor in the cash and the Xbox. If they could have made any money off the jewelery and cellphones I'd say it was probably closer to $4,000 or more.
The cops were no help with any of this stuff, BTW.