one time a year or less was the suffix for each of these, many more people fall into the once a month or so category. The economical thing to do is buy a civic and rent a truck the one time a year you use it for truck things.
If you're saying "a less bad thing is still bad!" then your comment reads more like the "We should improve society somewhat. / Yet you participate in society. Curious! I am very intelligent." meme.
People generally buy vehicles for to fit all of their needs not 95% of them. My back seat and trunk are almost always empty and my passenger seat is mostly empty.