As others have mentioned, it's nothing more than selecting the proper tool for the job. If the largest bolt I have to tighten is a 9/16 a 9 inch adjustable wrench will be much better for me than the 24 inch one than someone else might need for their inch and a half bolts. I have a trailer that weighs around 7000 pounds that I pull a several times a a year. The rest of the time, the truck is used for daily transportation. I had a 2500 diesel , but didn't need it., and I find that overall the new half ton provides me much more satisfaction.