I think everyone with at least half a brain knows we are in a bubble. What's the reason of latest Bitcoin increase? 100s of thousands unconfirmed transactions? How about all these crowdsales and ICOs based on Ethereum? All these "exciting" projects? Why DGB is close to 900 satoshi? DOGE? My personal opinion is that the price of a coin (or whatever) should be justified with usage and I don't think that usage of digital currencies has increased THIS much. Don't get me wrong - I'm also excited with the latest BTC increase and everything, but I'm always thinking about the future and now I think it looks scary...
Sure mate that we are in bubble but what I would tell ya.
There was a lot of projects that realy worked on something and was worth not much like NEM (30sat) price hover about 30-100 for year project was undervalued and noone gave really shit about it. Same went to BTC even if you look how many people were working aground BTC price was crashing and crashing all time. Then stopped and started rissing. Is hard to find fair value and say THIS is this price this is fair. Market allwas or overvalue price or undervalue that price.
Sad part is that many people will loose 90% capital in alts and many will loose some in BTC.
From all coins only BTC is used and ETH for funding ICO.