To me a better analogy would be: if you're a household of 2 who own 3 reliable cars, why would you need a 4th car with smaller cargo & passenger capacities, hi

To me a better analogy would be: if you're a household of 2 who own 3 reliable cars, why would you need a 4th car with smaller cargo & passenger capacities, higher fuel consumption, worse off-road performance and lower top speed?