Response 1: Why, are you lookin' for a guy? And if so, haven't you been watching all those news stories about people getting put away for trying this crap over Facebook?
Response 2: If you really want to find out, keep bothering me...
Response 3: Yes. I'm not saying it's something I would do whimsically or lightly, or that I wouldn't try to avoid it, but if, say, someone was threatening my family and the fastest and most certain way to end that threat was, say, to shoot them, I would shoot them. I'm not saying I might not feel bad about it later, but that feeling would probably occur sometime after the second reload.
Every day people die who don't deserve to, and in many cases, people who have done nothing wrong. If you show me that you are the kind of person who will use lethal violence for your own gain or amusement, and imply your willingness to use that violence against me or those I care about, I do not feel your departure from this mortal coil is a net loss.