Why does Nico Robin love Luffy?

Reasons for Nico Robin's Affection for Luffy

Nico Robin feels immense gratitude towards Luffy for welcoming her into his crew. Unlike many of her other crewmates, she demonstrates a remarkable level of patience for his impulsive nature. In fact, she often finds humor in his casual approach to crew recruitment, which leaves others in disbelief. It was through his relaxed acceptance that she ultimately became a member of the Straw Hat Pirates.