The temperature of the water in my pool has finally fallen below 60F. It was 58F last weekend. Therefore, I'll close the pool this weekend. My closing is simple since all I will do is drain all the equipment and put gizmos in the skimmers. The solid cover has already been in place almost 2 months so I don't have any vacuuming to do. Even though a significant number of pool owners in my area just keep their pools open year around, I close mine even if it will be only around 4 months before I start it up again. I close because I just don't want to think about it for the winter. I don't want to check to see if the pump is still running or if any of the other equipment is broken or leaking. Give me a good reason why I should keep it open instead of closing it.