Well actually because you need some stuff to remediate the drippy thing that disposes of condensate from the heat exchanger thing-a-ma-jig on the home comfort system.
And let's say that you decide you need a four or five foot long piece of PVC. You kinda know you chose the Vespa over the SUV, but you feel that you need the PVC pipe, and so, what the hell, you buy it, because, well, Vespa.
Riding home I thought, what if I decided I needed an eight or even ten foot long section of PVC? I would have gone vertical.
You can haul telephone systems too. Oh, and by some accounts, Christmas trees.