Protecting kids and other vulnerable people matters to everyone, so why not the government? What would think of a country where, let say your mother cannot go out without fearing getting robbed or raped? Same for kids. Maybe you do not have kids and you do not care. Anyway being a parent does not mean being behind your kids at every single moment. I hope you have not spent your childhood under constant supervision of your parents. So at some point everyone is concerned about protecting kid, and not only there own ones