Why are so many flutherers (and other people) so afraid to be free to be themselves?

I’ve noticed tonight, that several questions are about “is it ok to do such and such a thing” (for example, singing in front of a significant other or not wearing a bra)

Why are people so afraid to live life to the fullest? What’s wrong with living the way you want to live? Why all the silly imposed societal restraints? ...Or am I just crazy, and we really should be meek little people who should be afraid to enjoy life?