Times are a changing. If I was home alone, what would I do at midnight? I have no idea.
I know what I wouldn't do and that is to open my front door at midnight and shoot out it into the night. Granted, he did hit his target, but it still seems pretty irresponsible to me. I take gun ownership a little bit more seriously than this guy does and I don't even have a ccw permit (don't need one for shotguns).
I understand, but would you answer the door? Or would you call through it to see who was there? Or peered out a window to see who was there? Or maybe called 911 and ask someone to investigate. The very last thing I'd do is open the door without knowing who was behind it.
Beyond that, something else doesn't add up about this report. The kid rang the bell and stood there waiting for someone to answer. That doesn't jibe with "playing knock on the door and run". Even other neighbors/prank victims reported they "found nobody there".