I recently started going to the pool to learn to swim. Best decision of my life. The first 2 days were a bit tiring and scary. Once you get used to the water the fear gets away and fun begins. I also learned how to dive. I never thought i could do that. For a few days i tried to take the jump but backed down out of fear, haha. Once you take the jump it's joever. You want to keep jumping, everyday. Also, swimming is a great way to burn fat and increase endurance. I can feel my body getting better.
One con of swimming in a pool is body tanning due to chlorine. Apart from that everything seems to be pros.
Swimming is underrated.