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...
Yes, I also think like you, we are currently in a bubble but do not know when it will break, with a professional investor, they may think we are at the top of "Everest." For forex trading, earning 100-150% of the value of your assets in a year is a special thing!
But look here, within 2 months you can earn 5000% from XRP, 100 % From BTC and 300% from ETH ... actually this is a horrible number, count it to a higher value, you will see this number is not small.
I hope Cryptocurrencies will soon return to its true value, although I like the value of the present, but it does not feel safe at all - a frightening feeling to wake up every morning if BTC prices or altcoins projects I invest fall down...