No offense intended, but I've been installing security systems for several years now, and that information isn't terribly accurate. Granted not all thieves (the majority) are willing to spend the time and effort to break into a house (those who are looking for quick easy money), but there are certainly a great many who can and will break down most doors, regardless of the locks (those who do this on a regular basis).

The biggest mistake you can make is think a thief is lazy, and will move on after a couple of minutes. Maybe your right and you'll be lucky. But I'll bet you would be amazed at how clever someone can be to avoid having to do an honest days work.