Your younger co-workers will have been educated in public schools you paid for. If you're an employer, the people you hire will have been educated with public schools you paid for. When you retire, the people paying your retirement and running the country you live in will have been educated by the public schools you paid for. When you're sick, loads of the research on how to cure you and keep you in good health will have been done by researchers who went through public schools you helped fund.
Everyone benefits from an educated populace, which is why it makes sense for it to be paid for by everyone.
Agree 100%. Not saying I don't benefit indirectly from public education. In fact, I actually feel good about contributing to the education of my fellow citizens. My comment was related to the insinuation that childfree choice is "too inexpensive". What's next, let's tax childfree people more than parents?