Definitely depends on where you live. I live on the coast in the south. Tons of people trailer boats. The 'smallest' truck that can tow (actually able to stop) my boat is a Tundra.

Then there's people who own homes in the suburbs. Could I make multiple trips with my car to pick up 2500 pounds of sod for a project I just finished? Sure, I could also pay a lot to have it delivered in a couple weeks. And there's the other things like throwing my surfboard in the back or other 'fun' gear. Then there's trips to the dump, because trash won't pick up certain things.

The reality is, having at least a single truck in the family is useful for anyone not living in a city.