Pickups let you load stuff as high as you want to and the open sides can make things much simpler. Try loading a couple of loads of dirt in a van.
For home use I have seen most people buy dirt in bags. A sedan or even a compact would handle carrying those. The open sides can be a benefit for sure, but I don’t know about putting cargo ‘as high as you want to,’ given that wind is a thing. And vans are pretty tall anyway!
I understand that they can have some utility on a farm or something, but the average person is not regularly transporting a ‘couple loads of dirt’ in suburbia.
And I never said the average person should own a truck but buying dirt in bulk (measured in yards) isn’t unusual if your house has space for a garden and it’s way cheaper than buying bags of it. Same for carrying lumber that would be too long for a van.
Also it’s very funny that if you want to be able to do most of things a truck can do, the alternative to a truck should be a contractor’s van which has worse visibility on the sides and at the back, is just as big or bigger than a truck and uses the same engine…