Really? Taken apart any modern hard drives lately? "Parking" is simply the act of moving the heads to an area of the platters not used for data storage. The heads are still very much in contact with the platters, but if the heads get bounced around, there's no data under them to damage.
Stiction is caused by centripetal force of the spinning platters gradually drawing spindle bearing lubricant across the surface of the platters. This happens gradually over a long period of time. Once that happens, if you leave the drive powered off (parked or not) for a significant period of time, the contaminants can bond the heads to the platters.
Newer drives take steps to prevent this such as using better bearings and parking the heads close to the spindle so they can generate more "break-free" force from for a given amount of motor torque.
If you copy data to a brand new drive (preferably a lower capacity unit with a single platter and only a pair of heads) and then take it offline and store it in a climate controlled environment, stiction is not likely to ever become a problem.