As long as people are still playing AO3, I don't think it'll ever die.
So I give it a good 5 years.
...[T]he least initial deviation from the truth is multiplied later a thousandfold. -Aristotle, De Caelo
On the lips of the catechist the first proclamation must ring out over and over: “Jesus Christ loves you; he gave his life to save you; and now he is living at your side every day to enlighten, strengthen and free you.” - Pope Francis, The Joy of the Gospel
Call me out if I fail or seem to fail to live up to either of these. Either I will learn something, you will learn something, or we both will.