Because, attending public school and benefitting from its teachings only to turn around and say you shouldn't have to fund it as an adult is the ultimate "fuck you, I got mine". I don't like the property tax rate either, but others paid for me to learn and give me the opportunity to turn myself into a functioning adult, so I should pay it back. Unless you have some other brilliant idea on how to do it, it sounds like you think we don't have to educate future generations, or more likely, just the poor kids.