The best feeling is the sensation of being on a swing. The swoosh through the air as you push upside down and greet the view behind you with that excited tickle you get in such movements is just so wonderful. Or lying horizontal for only seconds as you reach the height and look at the sky in all its massiveness. Or watching your feet as you swing up and down, pointed as the sun catches them for a few moments each time.
How refreshing, to swing on a swing. The cheapest method of flying.