for people which know bitcoin from 2009 or 2010 but they don't invest their money in bitcoin was regret and disappointed because their opportunity in that year become increase too high for now. I am sure many people is regret about this and this time I think they won't missed the right time to buy bitcoin like the old time. I am not happy or sad for this because I know bitcoin in 2016 and in that time, when I know bitcoin, I don't have money to invest in bitcoin and I only trying to earn bitcoin from free way.