I don't need to read your post again, read mine, I was generalising across multiple people in the thread also, again if you hear someone and want to hide in the nearest place, don't you think if you had a torch, leaving it on would be a dead give away... its ever more likely that someone who dived inside the nearest room to hide would also turn out any light or any torch to not give themselves away.
Point 3, burglars don't gain access through non ground floor windows, thats a new one. More people leave windows open upstairs because they think the same way, and burglars will go through an open window over a closed door. From what I recall they've also stated there were ladders outside the window, making it again more likely to gain access through there than anywhere else.
There are multiple reasons for an intruder to end up in just about any room in a house with the door shut and the lights off. I just find it funny there are so many people in this thread who suggest its almost impossible for an intruder to end up in the bathroom with a door shut, when I can think of loads, not least it being the most likely entry point. The toilet of course being the window most likely to be open in every house