Do we still need hill farms?

The people who live and work on the hill farms believe that hill farms play an important role in the countryside. Not only do the farms produce sheep and wool but they also shape the countryside and keep it looking like we are used to seeing it. When we look at the countryside we see dry stone walls, farms and short sheep-grazed grass. This is not how it used to be before farmers tamed the land. Before farming shaped the countryside it was overgrown.