One time in the Twitter days, I made the point that the literary reason The Doctor and Sherlock are against guns (and there was a 3rd character too, I forget), is so that they're forced to use cleverness to resolve the plot. If they could just go shooting their way through everything, those would be very different stories.
Someone vehemently argued with me about that. One of those many Twitter arguments I still remember with bemusement of how anyone could argue with my clearly obvious point, especially when their counterpoints made no sense.