A lot of things impress me about bitcoin but what impress the most about bitcoin is the able of making someone rich over night without much stress or effort just by holding.
The most thing that impress me about bitcoin is the price and its uses. In addition to that, as of now the price of bitcoin was totally high and I think if you invest few years ago I think you could become rich now. Lastly, there are lot of uses of bitcoin like you can used it in different transactions.