Sure they are....if abused or misused, regardless of the object...it's not harmful if used lawfully, and under the conditions SPECIFICALLY designated for its use!  I can put a whole bottle of pills in front of me....not take a single one and suffer no harmful effects from them.  I can also load every firearm I have in the house...and NONE are going to harm anyone...I can leave them like that FOREVER..and no one gets hurt.  That's the point!   It takes some nitwit to misuse, or unlawfully use any "inanimate" object for it to cause harm.  Be it firearm, drugs, hammer, baseball bat, knife, vehicles, etc., they are, by themselves, all alike and harmless. "fer goodness sake"....( Humor is often used as a coping mechanism, especially by those who are forced to deal with the idiocy of people on a daily basis.)