Theft and burglary are, in the vast majority of cases, crimes of opportunity. That's the only point I can think of that favours locking one's door. Otherwise, i

Theft and burglary are, in the vast majority of cases, crimes of opportunity. That's the only point I can think of that favours locking one's door. Otherwise, if you have something someone really, really wants to steal, they'll find a way. Bit like IT security ;)