It goes away because the conditions that made it necessary in the first place go away, not because of the beneovlent actions of the state.
How about both?
Making child labor illegal increases the cost of child labor to business, reducing demand. Having adequate shelter and food as well as better opportunities for future wealth, like through public education, gives families less incentive to let children work.
Are there really that many industries out there today that would actually "benefit from child labor?'
If you believe in free markets, then you understand that many businesses seek to maximize profit. Human ingenuity is pretty much boundless, too. Being illegal at present, child labor is not something businesses need to spend much time worrying about. If that restriction was lifted, I trust business would try to maximize their benefit from this 'resource'.
Right. Do you want to know why leftists and statists hate capitalism so much? And no, it goes way beyond envy. For all of human history, the state has been the oppressor of mankind. Then along comes the moral concepts of individual rights, liberty and capitalism that frees man from the stagnation and poverty of tyrannical government. The statists cant have that so they attack the concept of innate rights, they ridicule liberty and they blame capitalism for the evils of the state. What we get now is the bizarre spectacle of the liberated turning to their old master to free them from their liberators. Not to worry though, this time the state is going to nice; you know, kind of the way the witch was nice to Hansel and Gretel. At first.
Rant of the day.
I like capitalism. Really. I even agree with you that capitalism is a huge enabler. The wealth it has created has helped humanity in so many ways. Child labor? If it weren't for the wealth that capitalism created, I can't imagine it could have ever disappeared. The luxuries that we enjoy, including this exchange on the internet - thank you capitalism ( and Al Gore ).
But reality isn't as simple as you make it out to be. At the same time that capitalism emerged, we also gained political freedoms that we've never before enjoyed. As much as I appreciate capitalism, the society that we presently enjoy is also a product of us exercising that political freedom to solve problems.
The issue for me is, because political freedom and capitalism arose at the same time, I can't really separate their influences and so I can't determine precisely where each is positive and negative - there are just too many variables to consider. You think you have the answer, and that it's always "free markets are good, collective will is bad". I'm not so sure and I accept points of evidence that contradict your assertion.
Communists thought they understood the world. They credited collective will and blamed capitalism for everything. This seems to have been a big mistake. You seem ( and I could be mistaken, so correct me if I'm wrong ) to want to go the other way, blaming collective will for everything and crediting everything to the individual. This scares me as much as communism does. It feels just as extreme. Especially given we don't have clear examples of laissez-faire societies.
I am open to being persuaded, I'm not opposed to the idea that you could be right. But when you base your ideas on things like, "leftists want to stamp out our freedoms" and "you're just envious" - let's just say these aren't persuasive arguments. They strengthen my view that you're an extremist. I'm not willing to risk political freedom for that.