The part of trial where the gun dealer testified and shared with the court the gun application questions that OP answered should be remembered when it comes to this line of thought, IMO. For example, below is part of an article that deals with that witness and some of the questions on that application.
"
Prosecutor Gerrie Nel questioned Rens on Pistorius' firearm training. He asked the dealer to describe how Pistorius was quizzed on how to handle a firearm in various scenarios, for example when two unidentified men approach the house of a gun owner; then when they break into the house, begin to steal belongings and order the gun owner to leave; and if the men threaten to kill the gun owner, who is behind a security gate in the house.
In each case, Rens said, Pistorius was asked if it was OK to fire at the men and Pistorius correctly answered "no". Pistorius correctly noted he was entitled to shoot at them only if they advanced on him with a gun, according to Rens."
Link to article:
http://www.stuff.co.nz/world/africa/9838185/Oscar-Pistorius-knew-rules-about-gun-use
Now then, OP answered a question concerning intruders breaking into a home and confronting the home owner. The home owner was behind a security gate, not even a completely closed toilet room door, but a security gate. He answered NO that he could not fire at the man/men. So clearly OP knows the responsible way to handle a gun. And clearly (to me) he just doesn't give a damn when it comes to what he wants to do.
Unfortunately for OP that application proves that OP knew the way to respond, what was reasonable, what wasn't, and he knew enough to answer correctly in order for him to buy more guns. But on the early morning in question he threw all of that out because he simply heard a noise in the bathroom/toilet room? I don't think so.
MOO