Ok, so why is this a gun debate? And who would really wake up from a sneaky intruder before he stands next to his bed?
And who didn't notice that people with guns in america still die?
And who really thinks that a gun that is stored properly (i.e. not loaded and unlocked under your pillow but unloaded, secured and locked away from the kids) will be handy once someone is already inside, maybe even standing next to where you have stored the gun?
Same goes for knives of course, if the intruder is already in my kithcen, how on earth am I supposed to get to the knives or pans or whatever?
My best but most expensive chance would be throwing my computer and my living room furniture at him

Well, being a poor student I have a floor, bath, kitchen and living room with bedniche. Then again, who would try robbing a poor student anyway? A murderer would come right to my bed or get me at the door when I open it or something, just like these people were surprised in their car and home respectively. Guns and better aim do not protect against the surprise effect most attackers use, the only thing that has a chance there is a ballistic vest/suit.

Concerning nightly attacks your best chance are probably mines or living in a bunker. Or well, living awake all night long but then you might go crazy or die of sleep deprivation or so.
A world with knives only would of course be better since chainmail isn't outlawed in Germany while ballistic vests are, concerning the general public, but then sleeping in chainmail isn't that comfortable either so most people might not use it.

Now you may be at the point where you already stopped reading or ask yourself "does he have some sort of point? am I stupid for not getting it?". Well, let me tell you I don't know either, consider it brainstorming.