The idea that a moral belief or behavior affects no one but the person committing the deed is a false notion. Our beliefs and behaviors define who we are and what we do. A type of behavior therefore is never solitary. It influences how we act around others. It influences the laws we create and the judgments we enforce. It influences how others believe and act. It influences other beliefs that in turn further influence behaviors.
If we feel strongly about a particular behavior, we should argue for its merits to communities and society rather than hiding behind the pretense that our actions will not affect anyone else.