Looking at the average number of kids per Amish family it is clear how they spend their free time.
Nothing else to do, might as well make another farm hand.
Today some Amish do have electricity, and tractors, but they hide them behind the barn. Much of the work is done by horses, but some things need a tractor. Putting up silage is one. Some use ground silos but that is not as handy at feeding time.