Children also learn important life skills by playing pretend games with their friends, and by climbing trees, and by poking dead animals with sticks, and by visiting the beach, or their cousins, or an art gallery. There is more to life than classrooms (or publically paid childminding, as some people seem to expect).
And not one person has suggested any of that should stop. I am simply trying to understand why teaching stops for such a length of time every year. There must be a reason because it happens in every country but no-one has said what it is. Why not keep the schools open during July and do half days and then close for August? That way kids can learn and still play in the nice weather in the afternoon. It's not exactly child cruelty. I am sure there is a very logical reason why it is not done though.