Becuase there's two kinds of people who buy pickup trucks, people who need a pickup for some reason (usually job or hobby related) and so are using it as a truck, and people that just want to drive a truck and so are using it as a car. Nobody wants to drive a truck as a car unless they want to feel big. It's as expensive as some luxury sedans and sports cars but with a turn radius only we could envy and a poor city driving experience from roads not designed to be used by large vehicles. They want to feel big and people that want to feel big tend to have insecurities of their own and anegatice self outlook that will also predispose them to being assholes.

So to answer your question: It feels like it's always tge bigger pick ups becuase all the assholes with self doubt, insecurities, and ego enough to want to play chicken with a semi are naturally drawn to driving the biggest vehicle they legally can to show how big their penis isn't.