The world can generally be classified into opposing groups. You’re either a dog person or a cat person. You hop out of bed, bright-eyed and bushy-tailed in the morning or you’re a night owl who likes to howl at the moon. You take a gloomier, half-empty view of life or adopt a rosier, half-full attitude. There are those who take the time to make their bed in the morning and those who just can’t be bothered. And then there are those who think there are two kinds of people in the world and those who eschew that kind of rigid bipolarity. But when it comes to handguns . . .