Answer:
Based on what I have learned about the background of James, I think that people would have been eager to read an Epistle written by him because he was very important. This is because James was the half-brother to Jesus. This being said, he could give a view of his life with Jesus that no other person could at that period of time. No one now could even give a little bit of a view of Jesus now that he has gone to heaven with God.