RE: bow for defense
The only way an intruder might get me inside my home, is only if I take too long deciding which gun to grab. I've got three within 5 feet of me in the bedroom. Most likely, he's gonna get some 12GA #4, 3"mag buck in any extremety I happen to have a shot at.
Bow as a self defense weapon? Only if I thought I could get at least one clean shot at him before he opened up, or I might throw it at him and take my chances hand to hand.