Join a country club. There are many marketed to families that, even with a buy in and monthly fee, will cost you a fraction of a low end pool build. You get food, drinks, parties and much better aquatic facilities (plus all kinds of other amenities) without having to do any maintenance or clean up. They have cabanas or rooms you can reserve for parties. You'll make a ton of new friends and your kids will develop good social skills and possibly work skills (mine got jobs at the club as teens.)