It's very simple. You are not a god. You do not have the duty or the right to tell other people what to do, or to pass judgment on them. You have the right and the duty to make moral choices for yourself and for those (such as children) for whom you have a moral responsibility; if asked, you're certainly within your rights to offer your opinion; but since you are a human being and not a god, it's not your place to pass judgment on how others choose to live, outside of very limited circumstances.

The laws of a community are the compromises that the community has agreed to make in order to allow people to live together in relative peace. None of them are perfect; all of them are compromises that allow certain harms to prevent worse harms. Religious liberty is a good example. Is it abused? Constantly. Go read a good book about the Salem witch trials sometime and see what you think of the alternative.