Why is derivatives so hard?

Why is it that derivatives seem to be such a challenging concept to grasp? I've heard many people struggle with understanding their intricacies and applications in finance. Could you explain what makes derivatives complex and why they're often considered difficult to comprehend? What are the main challenges one faces when trying to learn about derivatives? And how can these challenges be overcome effectively? I'm eager to gain a deeper understanding of this fascinating but seemingly elusive topic.