I also don't need to own a backhoe, every time I want to dig a hole I just rent a guy with one. It's very similar to trucks and yet nobody owns personal backhoes, but plenty of people own their personal trucks. It's a waste of resources.
I know a number of people with personal backhoes. They all have a fair amount of land. It doesn't take long to pay off a personal backhoe if you use them. Though most people don't have nearly enough need for large holes to make it worth it.