I hear you. For us it is kids, friends of kids, kids that play sports, grandparents, friends of parents, friends of grandparents, half the team and their equipment, grandparents going to the game, too, designated driver(that's a fun one), family vacations... it goes on and on. Since I got the car hauler trailer, I have zero use for our pickup truck. I can't think of anything I couldn't haul on the trailer VS our pickup and I can think of plenty that I can put on the trailer that couldn't fit in our pickup. Another example is we heat our home with wood. I can bring home 4 loads on the trailer that would be 9-10 in our pickup. And its easier on my back to load firewood on the low car hauler VS the bed of a pickup, too.
So now that I've tooted my own horn on my setup, when would a pickup be of more advantage over a Suburban? More towing capacity is all that comes to mind, but what else is there? If you want to haul a tractor, you'll still need a trailer. If you have a trailer, why do you need a pickup bed? 5th wheel comes to mind. What else?