I disagree that removing yourself from the system changes much of anything. It's effectively no different than committing suicide. The rest of the world goes on. And, in fact, they have more power, because now a smaller percentage of conscious individuals control any resources.
There's a difference between simply removing yourself from the system and doing things differently. It's simply a behavioural change. You live with a new set of priorities, or you can think of it as playing by a new set of rules. Why live with a set of priorities and values that makes you burnt out, ill and depressed?
You don't have to believe me though - research it yourself, if you want further proof that the current system is not working look at suicide rates, rates of medication use, self-medication (drugs, alcohol, food) and so on. We are living in a very sick, literally, society. Pick anyone of these and you will see trends near exponential.
I am not suggesting anything new or something that is not currently being done, right now, by hundreds of thousands, if not millions, of people, and it does, slowly but surely, change things. I am not saying we are anywhere near there yet though.