In my state, we are not protected by any castle doctrine. If we have to shoot someone and it goes to trial, the instruction to the jury is going to be along the lines of "what would a reasonable person have done?". Some of the DA's treat this automatically as you are not the reasonable person and some don't. We don't have a lot of consistency in California, even less when it comes to CCW. I just don't want to shoot anyone if I don't have to. Having little ones makes things a little more urgent when things go bump, so when I can, I avoid lights at first and try to stay stealth while I ascertain if there is indeed a threat. I carry my pistol with the muzzle down and my Surefire in my weak hand, thumb on the switch. Luckily, this method hasn't been put to the test ever.
When I was single, I lived with my brother. One night someone tried to come through a window at 1:30AM. They started to get it pried open and that woke me up. I retrieved a handgun and went and listened to the whispering outside the window. It turned out that it was some of my brother's friends who were drunk. I put the gun away and let them in. After discussing the "situation" with them, they never tried that again. These guys were losers, but they were basically good guys. I'm awfully thankful fo a cool head.