Question: why did elrond stay in rivendell?
Answer: Why did Elrond stay in Rivendell? He stayed for as long as the power of the Three Rings endured, which allowed him to ward off the effects of time on Rivendell and slow down the fading of the Elves (same with Galadriel for Lothlórien). ... Unlike Galadriel or Thranduil, he did not sequester himself.