I can't find the email, but in the last few days someone mentioned that if Wikipedia no longer allowed open editing, they would consider leaving.
The ability of all to edit seems to be a very important principle, and one that we're sticking to at a time when we seem to be bombarded with edit wars, disruptive users and vandalism.
Yet now we're suggesting that we don't allow everyone the right to read?
I'd rather we cleaned up objectionable articles.