Choosing to not lock your door at night is as much a personal right as choosing to own a gun. Blaming someone for a crime because they left their door open is no different than blaming someone for getting mugged because they walked down the street with their iphone in their hand.
I always lock my doors because my girlfriend wishes it to be. When I lived alone I mostly locked them out of habit but sometimes I didn't and I really didn't care. Accidentally leaving your keys in the door however, is not good and a visible invitation for trouble.
I've come across a lot of people in Madison who never lock their door, or at least all of their doors. I know at least one person who goes on vacation and leaves their house unlocked. It's easy to call them foolish but in most cases these are not "clueless' people. I gotta admit that part of me admires that they've chosen not to live their life in fear, or at least that's how I see it.
Of course the police recommend that everyone lock their doors, it's their job to error on the side of caution and give the overall safest advice possible. But on a personal level, where do you draw the line on avoiding crime? Locking your door is simply one of the easiest, most convenient ways to protect yourself and your possessions, but can't the argument be made that we willingly expose ourselves to many other crimes that are just as, or more common than, home invasion?
Driving at bar time or downtown after a Badger football game exposes you to countless drunk drivers. Using your precious little electronic devices in public exposes you to possible mugging. People leave all kinds of expensive items in their yards or on their open porches overnight. Handing your credit card to a stranger behind the bar to hold onto all night exposes you to possible fraud.
Why aren't people in the above situations, "just asking for trouble", the same as someone who leaves their door unlocked?