[da_zeb]

The problem with any sort of physical weapon like a knife, axe, baseball bat, sword etc is that unless you're trained in its use, it can just as likely be turned against you.

I agree with everyone who has suggested getting a dog; however, in my opinion a large dog is overkill, as it will cost a lot more in feed, leaves bigger piles of shit and sheds more hair for little extra value since the main purpose of it is to frighten off the intruder (or at least give them pause) and to alert you so that you have time to prepare yourself to deal with the intruder, (by running away, calling law enforcement, or defending yourself). Even the friendliest dog will undergo a personality change into a vicious snarling beast if someone comes snooping around your house late at night or tries to force their way in. Unless the intruder is there specifically to injure or kill you and are well armed, they won't risk entering a home with a dog.

Pepper spray or bear spray is another good option since it doesn't require any training, and in the confined spaces of your home it will be very effective.

You can also take steps to intruder-proof your home by installing locks and deadbolts on interior doors.