I have to LOL at this, this is what I tell my kids who whine that the pool is too cold at 75 degrees....I am only 38, but spent most of my life at the beach, swimming in Delaware waters of less than 70 for the most part...I prefer 80 plus at this point if I am lounging in a pool. Although I remember riding waves at 60ish degrees, no wetsuit, chattering, blue lips at the age of 10
I am lucky with the sun, solar cover works well here, but for most of CT not so much....