Lee bee, if you can find parents who agree to pay your holidays that is great! I would love paid holidays but I chose to open my hdc with the understanding that I was getting into the service industry and being self employed. I can't think of any self employed people who get paid holidays actually. IMO it doesn't matter what the service is, if it's not available than it shouldn't be charged for. I certainly wouldn't be paying for a service that was not available to me.
It has nothing at all with thinking I don't deserve it. I feel that every working person would love/deserve paid holidays but the reality is that many jobs don't offer this. There are benefits to every job though and I appreciate all the benefits I receive from owning a business that others who don't own a business don't get. If I wanted the benefits from working in a centre I would still be there. Working for someone else vs working for yourself will never be the same IMO.
All the power to you but please don't assume that those of us who don't charge for our holidays feel we aren't worth it. We just have different opinions on what being a business owner means.