My point is that people who are not, can't claim to be self-supporting.
No, your claim is basically that anyone using any government services is not self-supporting - whether it be public schools or public parks. However I see no where in your claims of non-self supporting taxpayers and comments about those that use public roads. I have numerous taxpaying friends who enjoy the local public parks, the public library, and the public roads - but have no children - do you consider them to be not self-supporting?