Your concern is completely valid, ignore the haters. We struggle with the same thing. We try to give our daughter the final say in any and all "structured extra-curriculars" she's involved in, even quitting right after starting, on the hope that her feeling even a little in-control of her own schedule is more valuable than "learning to finish anything you start". But cutting down on those is the only other place I can see to allow more unstructured play. And even then, we try where we can to "assist" with making the unstructured time more valuable, by trying to be present, engaged, and willing to do pain-in-the-ass things (like go run in the hot park for an hour after a long day of work) if that's what she wants. We try to ask her, and suggest options "do you want to stay in and play or go to the park or xyz...". But who knows, there is a constant feeling that no matter what, we're doing it wrong.