It’s a farm truck, mostly. A truck of that size is absolutely necessary when you’re hauling a flatbed trailer full of hay or livestock.

Because we’re able to afford multiple vehicles, it spends most of its life sitting in my parents’ driveway. They drive it once a month or so to avoid the issues that come with a vehicle not being used at all, but otherwise it makes little sense to drive it when both I and my parents have more efficient vehicle for day-to-day stuff.

Honestly, I understand what you’re getting at, but it’s a matter of perspective. Both I and my dad keep a current Class A CDL so we can drive that truck with a loaded trailer. When we need it, the alternative is hiring a semi - and it’s significantly both less expensive and less polluting per mile than a semi tractor.