The threat of harm to any would be intruders is usually more than enough to frighten them away.
How do you know how the next drugged-up moron will react to anything?
How would he know I have a gun in my hand when the lights are off as they should be?
Are you a moron who would actually turn the lights on for him to see that you are armed?
Guns are for extreme situations. Those are rare but dire in consequences.
Last question...Why am I wasting time on a ball-less Jewish pacifist who can only kneel and beg for his life?
People like you are parasites who benefit from the risks people with guns created for the home-invading scum. If you posted "Gun-free zone here" on your front door, take a picture and post it here.
If you don't have such a sign or a gun, you disgust me as a parasite riding on the backs of others who hate kneeling and begging.