Home Again

We returned to our home this morning just before lunch. Spent a very lovely afternoon doing nothing except reading and visiting with my in laws. This evening Dad and I took the three older kids down to the creek to play. (Kyle was here for the weekend. He came with Dad and Carla and they are leaving sometime tomorrow for home. Mom is flying home on Wed.) They thoroughly enjoyed this. Which brought to my mind an interesting question. When I was growing up going swimming on Sunday was frowned upon. Is this an inappropriate Sunday activity? If so, why?