Should we get rid of child labour laws because they are government regulation?

As a free market capitalist, I am against government regulation. Businesses shouldn't be restricted on who they are able to hire, and working conditions need not have any regulations. If I, as a parent, wish to send my child to work in a coal mine or a factory, I should be allowed. Not only will it increase our family revenue (cha-ching!), it will teach my child responsibility. It would be beneficial for employers to hire children because they will be willing to work for less as they haven't a family to support. What do you think? As a family, we'd have more money to spend, and products will be cheaper. I do understand that my child may get sick due to unsanitary working conditions, but that is the price I am willing to pay for a better quality of life for my family.