Why? If the competition offers an inline 6 that produces more HP and more torque than GM's common V8s why not consider the I6? Jeep says the I6 Hurricane engine in the Wagoneers produces higher HP, torque and economy than the Hemi V8s they are replacing.
Cummins has been producing very desirable and high hp and torque 6 cylinder engines for pickups for many years and they bring a premium price.
Because I care about the experience more than the numbers in a personal vehicle.
I currently own a V6 turbo EcoBoost F150 that is fast AF. It's fast because I kept tinkering with it in hopes of making for an experience that I'd enjoy. What I ended up with is a truck that puts down awesome numbers on paper (or slips as it is sometimes), but still comepletely lacks in experience.
There's not a ton of practical scenarios for me to hold the skinny pedal down for too long without being a menace. And it already had way more power stock to pull anything it's payload and towing numbers were rated at comfortably straight up a mountain.
So I finally learned that going in fast in a truck is a little silly.
But if I had to go fast in a truck, I'd get an EV truck.
If I just wanted to go fast, a car or motorcycle is a better starting point.
If major hauling was the priority I'd look at HD trucks.
If efficiency was the priority... well, I wouldn't get a truck at all.
Half tons are the perfect do-it-all & family mobile in this modern era.
I prefer even my everyday transportation to have some theatre, even if it means I loose a few ET's or MPGs.
I don't subscribe to that whole 'V8's are simpler engines" thought though... all modern engines are complicated nightmares.