Actually that's not hero cop wannabe advice he just gave it's the opposite.  Would you just walk into your house like normal if you noticed someone had broken in?  Seriously?  Wouldn't it be better to error on the side of caution and enter quietly, in case the perpetrator was still inside? 

That way if you hear any movement you can exit quietly as well.  It's better than seeing your place has been broken into and you just walk in all honkey dorey as if everything is ok.  First alert might have been the car (depends on where he lives as far as cars in the driveway go) but the second alert & most important is the door ajar or frame broken, at that point he should have been on high alert calling the cops, waiting outside the door or in his car because it's highly likely the person is going to exit the same way they entered.