Are you aware of anyone in this thread, or of any major national movement, advocating for a tolerance-based right to perform sexual acts in public in front of children? Looking past the strange and extreme strawman you've propped up, the reasons for tolerance in society are multitudinous. It prevents misunderstanding, fear, and hatred from festering and potentially giving rise to violence.
As a simple thought experiment ask yourself the following question. How many individuals hailing from tolerant communities or organizations have you seen commit mass shootings? Contrast that to the number of individuals committing public violence who hold intolerance as a virtue. Public violence is a serious negative for everyone and its prevention should be reason enough to support tolerance as a basic tenet of societal health. The fact of the matter, no matter who might dislike it, is that modern societies are, for the most part, very diverse. Without tolerance for differences violence is a forgone conclusion in the modern world.