Two years AFTER you had to put a gun to his head, which you should fired? Lady, you're a fuckin' box of hammers! And don't pick up a gun if you don't plan to fire it. That's pointless.
Incident 1: Late 2012. I pulled out of a car wash onto a somewhat busy main road. A white car behind me immediately honked. I guess they thought I had just cut them off. If I did it wasn't intentional. Anyway as I drive down the road they begin tailgating me. I let off the gas and my car starts slowing down. Usually this works with tailgaters. Not this time. We got up to a red light, cars on all sides of me. I locked my door, unholstered my Colt and set it on my lap
(this is illegal in states where you cannot OC) When traffic came to a stop, the passenger of the white car tailgating me
(an early to mid 20s white male with a thick jacket and turned DC cap) got out and approached my driver door. I waved my hand and then pat the Colt sitting on my lap. He immediately jogged back to his car and they went a different direction with the green light.
Incident 2: Last year. My brother forgot his phone and I was driving to his work to give it to him. It was near zero degrees outside, lots of snow and ice, maybe a dozen cars on the road. I notice a car waiving through traffic like Mario-Cart and approaching fast. I was traveling next to another car. Everyone but this one car was doing @35 in this 55 zone due to weather. This car got right behind me and tailgated me all the way to my brother's work. When I got there, the guy stopped back a ways. I turned on my phone's voice recorder and lifted my Carheart jacket over the handle of my Colt
(Carheart lengths are short and this is pretty easy to do accidentally, too). The guy got out of his car and started sharing some creative adjectives Something along the lines of "...you cut me off you little ****....you know what you did....*F-bomb here & there*. Pretending get something from the driver seat, I turned my gun side to him. He took obvious note of the gun, stopped for a moment, then walked backwards to his care sharing a few more colorful adjectives, and left.
So yes, guns are a deterrent.