You come to my house, and bring a drug user with you. (If you can't find one, I'll supply one)
Both of you can sit on my couch at the same time.
You point your gun at me, and the drug user can sit there ingesting his or her drug of choice.
Guess which one of you I will kill first.
L
Ok let's set a child molester next to me instead. I bet you would still probably kill me first, but does that make the other guy legally "OK"?