It's a classic fear vs freedom dichotomy. We are both being a little intellectually dishonest, and should perhaps frame the question a little differently. To answer your question:

> would you like to live in a world where someone could baselessly and maliciously accuse you of rape or other defaming acts without consequence

Yes, if the alternative is that I can be held criminally liable for hosting a web forum that doesn't require some form of government enforced ID system. How could it be any other way (genuine question)?