So, Glenn, were you discombobulated by the light or the mess?
I have a Surefire next to the bed. I carried it in my purse for awhile, but the little quick-on button on the back got pushed down inadvertently and drained that very expensive little battery. So it lives on my nightstand. I use it because in the dark the BG will have HIS sight blinded for a few seconds and I won't.
I would agree about knowing your house. You should be able to walk your house in total darkness and know where you are. And if you don't turn on the lights, the BG won't know what's where, where the kids usually leave their skateboards (who needs claymores when you have sloppy kids???) or that spot near the laundry room where the basket of dirty laundry is sitting. I've frequently thought that my dogs and my guns are less likely to do in a bad guy than my kids' mess.
Springmom