I for one have used a gun to defend myself. When I lived in an urban area of South Sacramento, I had my door kicked in at 4:30am in the morning. Luckily my dog growled when they were behind the house unscrewing security lights and I had gotten up and saw shadows as they went around the corner to the front. Then I heard the crack as they kicked open the front door. Luckily for them hearing me rack a round violently in my 1911 sent them running and they never entered, because with the armed home invasions happening around that time I was shooting whoever came through the door. Besides, you're not the sharpest woken up in the middle of the night so you kind of assume the worst and let it shake out where it will.