We have a swing that hangs from high in a tall tree in the backyard. The ropes are long and it's arc is broad an our boys love it. They're on it every day. Since there is only one they also fight over it. But sometimes, they enjoy it together.
Each of them has fallen off the swing and hurt themselves on the rocks or scraped themselves on the bark of the tree (although that's not where Dallin got the sore you see on his forehead). It doesn't stop them from hopping right back on.