It shouldn't be that easy to shoot anybody. I have pulled my gun once in my life. I was at a gas station at night, and while pumping gas I noticed three men starting to approach my vehicle from three different angles. I calmly reached underneath my car seat, grabbed my gun, and held it close to me. I was scared shitless. A ton of thoughts went running through my head in a matter of seconds, I desperately didn't want to use my gun to defend myself.Luckily, those three guys apparently understood the gesture I made, although they probably couldn't make out the fact that I had a gun from the distance they were at. They broke off, and the biggest sigh of relief I've ever had came over me.
So basically, unless you're a fucked up person, the decision to even hold a gun with the intent to kill should never cross your mind unless it's a last resort.