There was a time when not revealing your identity was considered the safe way to be online, and telling strangers your name or personal info was taboo. Really, it was basic internet hygiene. The first push for real identities on social networks came mostly from advertisers, and those can go to hell.
Yes, some people abuse anonymity to be assholes with no repercussions, and obviously I am not okay with that. There should be ways to deal with those without forcing everyone to expose their identity to the whole world.
I will keep defending the right to anonymity. You only need one deranged maniac with different views on whatever, or trying to ruin your life for whatever reason to get into serious danger.