1. Â it's probably your teenager coming home after curfew, and you will probably shoot her. 2. if it's not, it's probably something equally harmless/innocent, and you're going to shoot it
I don't think anybody is advocating shooting wildly at any sound. You would investigate, with your firearm low but still ready, and if it turns out that there is a threat, then you shoot, if the threat is not scared off by your presence or your firearm.
3. if you shoot an unarmed burgular in your home at night you will still wind up in prison.
Maybe, maybe not. I think this would depend more on what the situation was like, your area, your legal defense, possible prior crimes of the burgler, and so on.
Usually some poor kid shooting himself with his daddy's gun. To have one in the house is an invitation for your twelve year old to kill something (probably himself). Â Idiotic.
As stated by many other people, proper storage of your guns, and education of your children is key. Teach them not to play with guns, if they see one, go find an adult. Also, it depends on your child. Kids are not as stupid as people make them out to be.