Xavon, if you're still reading this:
Answer this. When you see a homeless guy, do you find it funny to stab him seven times in the back? Or when you see a little girl walking in front of you, no older than 4, does something inside of you tell you to snap her little neck? I know what you're talking about, I've felt the same way. An inexplicable urge to take the lives of those around you. Complete strangers of which you think they're better off dead and made so by your own hands.
Many times have I caught myself in the act of visioning people's deaths. Loved ones and strangers alike. It even became as much as routine to kill everyone I'd meet at least once inside my head. An automated process of which I thought nothing but justice. Because face it, we all deserve to die. That's one part of me that hasn't changed one bit after all those years, I still think we all deserve to die. The filthy, rotten plague that we are. Murder, deceit, all those fucking infestations.
But I never acted on these feelings. God forbid. And let me tell you why. Because I was not ready to let myself go and lose it all. Well, scratch that, it was mainly because of my family. If they weren't there I would have gone through with it a long time ago. I wasn't willing to cut the bonds with my brother and mother (I could care less about my father, long story, don't ask), because they were all I had. I couldn't afford to lose them, nor that last piece of sanity that still lingers today.
Getting caught? Please. If you really wanted to kill, you'd find a way. I know I would. I have the brains to pull it off, I bet you too. No training to kill effectively? Anyone can pull a trigger, jack. "God made men; Sam Colt made 'em equal!" Note that I'm not trying to encourage you in any way, but to let you realize that even with these easily overcome barriers, you're not going to kill. Because, you would already have, if you truly were a sociopath.
As with everyone with these feelings, it probably sprouted from a traumatizing happening. People are born neither good nor evil and as swaenK already stated, we're a product from our environment. Some personal unfortunate mishap has probably led to these feelings (of grandeur etc.) and other symptoms, e.g. paranoia, schizophrenia, depression. I never got professionally diagnosed for anything of the like, never went to a shrink. I did make effort to evaluate my mental status on my own though. Anyhow, this is my guess, correct me if I'm wrong.
Oh, here's a suggestion. Join the army and get your ass on the front line. Take some lives. War excuses killing after all. Put a few bullets into the heads of the enemy for me while you're at it. If you really want to kill and can't fight the urge, then kill in an accepted manner. Do know that once you kill a person, it all changes. People become nothing more than breakable objects. Words like soul, mind, etc. will lose its meaning.
I can keep my thoughts and feelings in check, the urge subdues after time, I can tell you that much. Heh, after all that time I'm still only worried about my family. My brother is my biggest concern, he's having the same thought-process as me, a bit slower perhaps. He doesn't show much, but I can tell. Don't worry though, I'll straighten him up, if it's the last thing I though :).
Final advice: Go see a shrink, open up to him (or her, whatever) and if nothing helps, join the army. Whatever you do, do not give in to those feelings. If you ever need to talk or anything, you can PM me etc. etc.
Have a nice day, I'm going to bed. Goodnight.