As a kid, having a pool–or having a friend with one–felt like the greatest gift of all time. There is something so refreshing about jumping in the pool after a long day at work or a tough workout at the gym. Even just using it to float on a raft on a sunny day can be relaxing. As an adult, the financial aspects of putting a pool in your backyard can be intimidating. People like to talk about how the pools can be expensive, but there are plenty of reasons why getting a......