<human>: Condense the text into a few key points

Today, I had a little bit of a quarrel with my SO's step dad. 
Backstory: He has recently become a gun fanatic, and thinks that guns are the ONLY solution in situations where a form of self-defense is required. 

On the other hand, my parents are immigrants who came from a country that is stilled crippled by war, which left both of them believing that guns were not a very effective method of self-defense, and that firearms are largely connected to fear, death, and destruction.

The quarrel: My SO's step dad asked if I had ever shot a gun, and I said no. It isn't like I'm strictly anti-guns, but because of how I was raised, I was never given that kind of opportunity and it wasn't top of my to-do list. All of a sudden, the step-dad laughs out loud and says, "Hahaha, your parents think they're liberating themselves!", and even though I tried to explain why(since he is an impossible person to get along with, I was talked over), he just went on by saying something along the lines of how people especially need guns in time of war, kept laughing, and then got angry when I again tried to explain. He assumes the position that if you don't have a gun, you have no means of protecting yourself. even though he himself had never lived through that kind of situation. My parents are from an occupied country, which in itself is a different kind of "war".
<bot>: My SO's step dad asked if I ever fired a gun, and laughed in my face when I said no and that my parents never used guns.