The answer is simple! A professional long distance moving company will do more than just getting your things across the state. Think about your new home, it might not be big enough for you to fit all your things. Moreover, you made it to your new home, and you got to unload, unwrap and put back your loads from a 72 feet long truck. The process will be very frustrating because you won't have the manpower to do everything quickly.
Usually long-distance moving companies try to offer a full-service package, loading, transporting, unloading as well as putting everything back in place. This is your best bet when it comes to long distance moving.