This might get me jumped on, but....
I really beleive that you have a better chance getting struck by lightning than being the victim of a home invasion. However, I do also beleive alot depends on where you live.
If you have children, loaded guns of any sort in the house is a bad idea. And I don't care if they have been "trained" to leave them alone. Kids are curious by nature, and yes, they do alot of stuff that you DON'T know about. There is a GREAT chance that they WILL find them and play around with them.
If you must have a weapon for self defense, get the best that you can afford, and one that you can shoot accurately and have COMPLETE confidence in. No matter if it is a pistol, revolver or shotgun. If it does not work reliably, and you cannot shoot it, it is useless in time of crisis.
Many ask me why I carry an "Old timey" S&W J frame. Well, because I'm old timey, it works, and I know I can shoot it. God forbid I have to draw down on someone, but if I do, I MUST be sure.
This is a subject not to be taken lightly or foolhardy. Sorry for the soapbox, this comes from my experience in the Military, as a Game Warden, and as an Armorer for Law Enforcement.
Kind regards,