> If you need to carry passengers, a truck probably isn't the right choice. Four doors and a bed make for an oversized and inefficient vehicle for hauling either people or cargo alone. You say "broad market", I say "ill suited for most tasks."
It's a fine choice, as long as the truck has 4 doors. And the super cabs don't really affect gas mileage much at all.
When I was growing up, my dad had one of those tiny Rangers. There were 3 of us kids. My dad was a part-time plumber and also built our house when we were younger. We'd make regular trips to Lowe's or whatever with him when my mom was working. There weren't even 4 separate seat belts. It wasn't really safe, and it was a tight squeeze that was only possible because we were quite young. Anyways, many reasons why you sometimes need to do both.