What impresses me the moste is the fact that bitcoin has remaind on top of the market for so longe with all thoes other crypto currencies out there and has mannage to get all other coins markd as altcoins as if there are only one cryptocurrence that matters
Well for me the most impressive part of bitcoin is that it provide a lot of opportunity to people about earning and its price is always high and bitcoin is now available in anywhere so I think bitcoin is the only hope which can make you rich in a short time and thats what it happen with me because when I was not a part of bitcoin so my financial status was not good.