My wife and I were both homeschooled and are homeschooling our children. Their opportunities are far more diverse than if they were in school most of the day. They don't have digital device addictions and play outside 10x most other kids. They are capable of engaging people across a wide range of ages, not just those within a year or two in age. When playing with similarly aged peers, they are consistently the leaders of play because they have more natural creativity, imagination, and, most importantly, initiative. They can fit into a system when needed, but they can also create systems on the fly because they haven't been trained to be cogs on a wheel.
As an evolutionary developmental biologist, I was trained that the key ingredient to adapting to changing environments is phenotypic diversity (diversity has to precede natural selection). If you think the current system of mass technology, mass corporations, and mass culture are sustainable and desirable, leave your children in a system originally created to meet the needs of the barons of the industrial revolution. They'll fit right in and never notice what they are missing.
Long-term, monocultures are rarely sustainable and generally quite boring. So, if you question the value of our current system (e.g., wealth/power distribution) or think it is unsustainable (e.g., global warming), you might want to raise your children outside of the system. They can always choose to conform later, but it is much harder to reacquire the true creativity that comes from not feeling the internal need to conform.
I was raised outside "the system", but entered the system to get a PhD in evolutionary computational biology and now work for a health related biotech. I got my position because I have a distinctively different approach to problems than most.