Then you're missing something. I would never want to good back to the ancient technology of a fixed arms where you have to bring your car up to the exact spot necessary to engage your pins or drop the receiver on the ball. I don't have that much faith in towing a vehicle with a trailer hitch. You're asking an awful lot of that ball doing so. After I got away from a fixed towbar and started using my Blue Ox with extendable arms, I'd never consider going back to mess with a fixed towbar again.
To each his own. That's why they make so many different models of things.