Well, given that people right now tend to mostly do whatever makes them the most money, it's impossible to quantify how many people might like doing gargabe that aren't just because they're doing something else for the money. If no one had to work and only did what they wanted, no one has any idea how the numbers might play out for who wants to do what. It's entirely possible there's plenty of people who might like driving those big trucks enough to do it.

I'm not saying it's likely, but it's certainly not "impossible."