Let me express it to you with some numbers... The US is ~3.81 million square miles in size.

The F150 has sold 8.810 million units in the US in the last 10 years.

There are ~ 2.3 F150s fewer than 10 years old for every square mile in this country.

There is no way the majority of those trucks are going to job sites, or hauling junk, or pulling a trailer, just look around. That's not even all trucks. Thats just one model, from one brand, for a single 10 yr period.

These trucks are primarily sold as a vanity vehicle, and a minivan alternative, and that's what I think when I see one.