My gosh, I never imagined sports cost $5k/kid/year. Kinda hope my 2 little boys are drawn to couch potato-dom as I was. What sports do they play that cost so much?
We parent by allowing the kids decide what they enjoy. One Enjoys VB which is about 10K during the season. 6K for Club Dues. 4 away trips this yr is 1K/trip and they are all within driving distance. She does School VB too. I have no delusion that she will make money from VB, or even get a college scholarship. But 10K is well worth keeping her out of trouble, and in shape. I am happy to trade 10K rather than having all of the unhealthy, out of shape, social media, drug using, sex finding middle/high schoolers.
My youngest is starting Club BB so add another 2K. 3 K more for summer camps, etc.... keeps them out of trouble and we can afford it. Again better than having a lazy, overweight, depressed kid on my hands.
If you think 15K is crazy, I know parents who does private lessons at $110/hr, do national club teams that travels 4-5 times all over the country so that 1K trip becomes a 2-3K trip.
I have a partner that has their High schooler in a private tennis academy with private coaches that must be IVY school level tuition.
Now if you get into competitive golf, tennis, Horse anything, any individual sports, you will likely need private lessons if you want to be the best. I grew up playing lots of basketball and it was essentially shoes/ball then find a court for pick up games. Even BB has morphed from just going out and finding pickup games to club sport teams. Drive around and most basketball courts will not have pick up games and if you do find one, get ready to get your teeth busted up.