What a person does to himself is his own business. I do not want others interfering in my life, therefore I will not interfere in theirs.
(I do have one small criticism of your post: Snuff films are an urban legend. There's no evidence that one has ever been made. This is a small point, however, since those who want to interfere in the free speech rights of others would be loath to argue the point.)
Great libertarian point of view, to which I agree.