@Terthna, if you are truly that worried about your personal safety, I strongly recommend you get acquainted with local law enforcement in your area, start reading on all laws concerning self-defense in your area, read up on self defense and take self defense courses, take a good hard look at purchasing firearms for self defense and decide what you want, and purchase them, and last but certainly not least, apply for a CCW (Concealed Carry Permit) and be sure to know EXACTLY what all laws concerning self defense with yourself and home is. Also, if you do apply for CCW, consider insurance through the USCCA.
If nothing else, it will hopefully let you sleep better.