In my opinion, bitcoin is difficult to understand because it is a complex technology that combines mathematical algorithms, economics, and politics. It requires a deep understanding of these fields in order to fully grasp the concept behind bitcoin. Additionally, the rapid pace of technological advancements in the cryptocurrency space means that new innovations are constantly being developed, which can make it challenging for people to keep up with changes in the industry. Finally, bitcoin is a decentralized system that operates independently from traditional financial institutions, which can create confusion and uncertainty around its function and value.