I think we are at the tail end of the early adopters stage!
No we are now again at the start because price after the long journey of dumping now again increasing very high and this time bitcoin price is going to go very high, those people who have adopted bitcoin in early stage are those who can get high profit from bitcoin, right now bitcoin is increasing more and more so we will not have to be worry buy and hold, bitcoin is now at very peak of addition in price as thousands of investors are investing in bitcoin and they are earning with the help of bitcoin.
It is too early to say anything related to that of the stage at which these crypto currencies are at this very moment. It is because of the reason that the roots of the crypto currencies are not that much strong right now as they should be and that it will surely take lot of time for them to make their name in the entire world and to stand amongst other regular currencies. we need to wait for more time to hear some good news.