Because, as we have seen in the Rittenhouse trial and in others, weapons choice can come up in trials, and because some people (jurors are people, after all) have been demonstrated to have biases against certain types of weapons and their use, it's important to be informed about the topic. At the least, one would want to be ready with good answers for the questions that will likely be asked. Like Rittenhouse was obviously ready for the questions the prosecutor asked him. A lot of people seem to think that someone is trying to tell them what weapons they're allowed to use and which ones they shouldn't but that's not really what they should focus on. The real message is to be prepared. A self-defense shooting isn't just an end to a violent attack, it's also the beginning of another potentially perilous situation. Just like we prepare for self-defense situations, we should also prepare for what comes afterwards--and for very similar reasons--there can be a lot at stake. Imagine if you were discussing the potential need for a firearm in some self-defense situations and the person replied: "I conduct my life in such a manner that I'm unlikely to need a gun for self-defense." How would you reply?