Seeing the middle ground here, I take reasonable precautions to ensure that nothing of value is left out for the opportunists thief to steal. The vast majority of burglaries are by opportunity and not planed heists, quick and easy entry and exit. Leave your car keys in an obvious place, kitchen worktop etcetera and its easy pickings. And whilst insurance will cover any loss, said insurance company will try to recover that cost in later premiums.....so you will pay for it
On the other hand, if I heard strange noise downstairs, one would have to be absolutely insane to confront them, they have little to lose, I have EVERYTHING to lose, so I would be putting the wardrobe behind the bedroom with my daughter and I behind that and phoning the police