The Harley Davidson F-150

The F-150 has been the flagship..err truck for Ford for over 60 years.  I understand the need for a light truck with an open bed for hauling s%&^ around especially if you live out in the country farming or like getting roped into helping your friends and family move on weekends.  But what is this?  You need a speciality truck to haul your bike around?  Why not drive the bike?

I don't see this owner throwing stuff in the bed that could damage this truck.  So, I am still confused over this one and probably will be.  Please help me out if you can.