I asked some people about that, saying that in the UK the victim would be blamed for making their stuff easy to steal.
What? I live in the UK, and leave my house unlocked all the time. I also leave my car unlocked all the time.
For the former, it helps that I have a 35kg dog (who is a complete wuss, but potential burglars don't know that). For the latter... I'd prefer a thief to open the door than to smash the window to get to something inside. If there's nothing inside, no harm done.