Im of the belief that the highs we saw in January, before this bloodbath, are actually a glimpse of the values of coins over the next few years, but what we need to remember is that the $$ value is only based on Volume Transacted and the Demand for them, if a company has positive news/progress, this doesn't correlate with a rise in price unfortunately!
At some point in this game, cryptocurrencies will have to separate from FIAT currencies and hold a value in their own right and be backed by 'something' else. Whatever that may be, I do not know.
With the volatility so high, mass adoption is going to take even longer and some projects may even just stop because there's no ROI or all the funds from the ICO have run out, but as long as there are Visionaries out there, like Japan and their love for Bitcoin, or Brad Garlinghouse driving Ripple into Financial organisations to build upon that Blockchain brand, then we will get there.
I believe by the end of 2018 we will see tougher regulations and higher level of scrutiny of ICOs to stop being getting scammed or losing out because of Pump&Dumps, but a byproduct of this will be a safer/less volatile area for all of us to work within. Day trading will be possible for another 5 years or so but then at that point, majority of coins that make it into mainstream will become utility coins and the value wont be worth day trading.