The only reason you'd get hammered for that question is the implicit assumption that nobody who owns an HD truck needs it.
You might see me drive to the store once in a while in my F250. So you'd probably wonder why I needed such a massive gas guzzling grocery getter? Well, because that day my wife took the Bolt and I had no other option. People fall for this fallacy all the time, assuming that if you see someone underutilizing their truck, they must always be underutilizing it.
But I only drive mine a thousand miles a year, and except for rare occasions only when a travel tailer is attached behind it. The rest of the time we drive my wife's Bolt, and I'll wager that my average fuel consumption is lower than most people who only have an economy car.