Roy’s reasoning for marrying Amy suggests that he’s struggling still to adjust to life in the U.S.; wanting to marry Amy because she theoretically won’t assert herself shows that, in many ways, he’s still far more comfortable with traditional Kenyan ways of life. Kenyan or Luo culture might also look far preferable to Roy because of the way the family treats him, given that he’s the head of the family. They shower him with attention, affection, and whatever else he wants—something he might not have gotten in the U.S.