For me, it also depends on if we're home at the time or not.
If we come home and a door's open - I'm going to wait on LEO to come clear the house. No good reason for ME, someone wholly untrained to clear a home, should walk into a situation where some unknown number of people may be currently inside my home.
If we ARE home - and I/we "think" there may be a prowler, I MAY go investigate. If I KNOW there's someone in the house who shouldn't be, I will do my absolute best to protect my wife and my daughter (bedrooms are all close together).
Again, I am wholly untrained in how to clear a house. It would be foolish for me to attempt to clear a house when there may be a person (or more) already inside.
My FIRST earthly priority is to help ensure the safety of my wife. Second - the lives of my children.
In OUR house, walking down the hallway away from the bedrooms towards the living room / computer room / kitchen / garages - and away from my defensive position just isn't smart.
You may ridicule all the "wimpy" men you want for wanting the police to do things for them. That doesn't bother me.
But we ALL need to realize what our limitations, strengths, and weaknesses are. I am not a LEO / MIL. I do not know how to properly and safely clear a house.
I WILL do my absolute best to take care of my own, though. But I also know that part of taking care of them is to not do anything stupid.
-J-
No one can clear your own home better than you can, training or not. You have the distinct advantage in your own home.