[Zarathustra]

This sounds like it could be fake, but if not, allow me to explain why you are inadvertently leading your parents to understand you less while making your life harder. Your parents are very unlikely to alter their religious views, so why waste your energy to change them? If you do legitimately believe that you can change their views, you are going about it in the worse possible way. You are younger than them, so by default they will assume your ways of thinking are immature and incorrect. Condescending them and telling them that they are stupid is conventional teenage behavior and will be naturally construed by them as such. You don't believe that morality exists, and neither do I. Why not use your intelligence to deceive your parents and lead them to believe that you are civil and obedient so they leave you alone until you move out?