You may live somewhere where people constantly tow travel trailers or large boats, but this isn’t the case everywhere. Loads of people buy trucks with the idea the bed will be used every other weekend, then they end up commuting to an office job and getting groceries. If they were primarily used for hauling things around, the average truck wouldn’t have a larger passenger cabin than its cargo bed.
Station wagons can just as easily go to the hardware store and pick up full sheets of plywood, load up the lawn mower and trimmer, and as much sporting equipment as a family could wear. What wagons don’t have is the aggressive design that pick up trucks have come to be.
Most cars could tow a single axle utility trailer if you needed to move what I mentioned - even appliances or furniture. I know a couple that tow a two person caravan with a Mini Cooper. Even when someone does need larger weight or volume capacity on a regular basis, a van has most of the benefits of a pick up truck with better fuel efficiency.