I was dead-set on getting a crewcab Sierra and was very actively shopping for the right one. A friend mentioned looking into the SUVs and how much better they were to navigate due to the tighter turning radius. I drove a few and was shocked at how much more I liked the SUV over the truck. Parking lot and crowded street navigation is so much easier. I rarely haul, so a truck bed would stay empty most times. When carrying "clean" cargo (groceries, luggage, etc.), I prefer it to be inside, as in the back of an SUV. My 3rd row seats have been taken out of storage to be used once in the past year. I don't like them being back there if they're not being used since they eat up cargo space. There's significantly less body roll with them out, too. Yes, I could get a bed cover for the truck to carry the clean cargo, but then I'm limited to height if I carried tall items. I'm old and decrepit and have a bad back, so I don't like lifting heavy things to the height of a truck bed. I'd rather use a trailer for the times I need to haul something, and my little 5x8 gets so much more use than my tandem axle 14x6.5. 5x8 is bigger than the bed I would've had with a crewcab truck, anyway. Loading and unloading is much easier with a trailer and I don't have to worry about messing up the top rails, tailgate or bedsides using a truck bed. I'd probably still use the trailer for dirt and dirty item hauling even if I had a truck. An SUV using a trailer is like having a more spacious truck interior and a detachable bed. With a truck, your interior is smaller to make room for the "trailer" you're carrying with you at all times, loaded or not.
Don't get me wrong, trucks have their places. These are my reasons for picking the SUV over a truck.