I still assume it is possible and likely that something like cryptocurrency will eventually become incredibly valuable, but I see that happening only when technical and social hurdles are overcome to make it as widespread and scalable as the current credit card system for everyday transactions.
Unfortunately for current cryptocurrencies, they just don't have what it takes to compete with decades of trust to get everyone to put their daily spending money in them, that is what will make a future system valuable. The current role they play as a speculative investment seems quite silly to me, literally they only thing they are good for is transactions, if you can't do that effectively I don't see value in the tokens at all.
Imagine if someone started a stock exchange and listed a single stock, their own, the stock for the exchange itself, and no one else's. While you can buy some things with bitcoin or ethereum, it's nowhere near widespread, so that really seems to be effectively what it functions as for now, which looks very bizarre on its face. Unfortunately for the people who do want to get rich, if there is an eventual winner in crypto, their rise will probably look something like what we see now, limited buy in from speculators followed by some inflection point, so it's entirely possible buying this dip of ethereum or some other coin might be the right thing, but I'm just not sure any of them are ready yet. Even with SegWit and other stuff happening in bitcoin, it just isn't clear to me that becoming a cash or credit card replacement system is even the goal anymore, which seems like they are just riding on their first mover advantage to prop up the value more than anything at this point.
Note: reposting this from the stock trading halt discussion after its parent appears to have been deleted.