I don't know man .. I think the risk is our friend for those who doing this .. I personally experienced to make my $2,000 savings become $15,000 unexpectedly from 2016 to 2017 , I have a strong faith in bitcoin and some altcoins since 2014 .. decided to go allin and I think I did it in the right time and on the right coins 
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On top of that ... I did it again for the second time in March this year when bitcoin hit its lowest price @3,700 USD and ethereum @100 USD , I sell my house put all the money on ethereum and guess what? A few weeks later it turned 260% profit! Coincidence? Luck? I don't think so
You need to aim for 300% , 500%, 10,000% profit or even more in cryptocurrency , you know why? Because it is the place! If you looking for steady non-volatile investment... then stocks or gold is your choice.
It's all fun and games until that trick doesn't work mate. It's gambling. It's not funny when someone puts their life savings or their house into Bitcoin and they lose 60% of their money, or hundreds of thousands or dollars. It's well documented and it's happened many times. For every person who does well there's a person who does badly. .On top of that ... I did it again for the second time in March this year when bitcoin hit its lowest price @3,700 USD and ethereum @100 USD , I sell my house put all the money on ethereum and guess what? A few weeks later it turned 260% profit! Coincidence? Luck? I don't think so
You need to aim for 300% , 500%, 10,000% profit or even more in cryptocurrency , you know why? Because it is the place! If you looking for steady non-volatile investment... then stocks or gold is your choice.
I'll re-iterate, it's gambling, and to encourage people to do it as a sound investment is dishonest.
Just making the decision that I do really know the risk behind, it's indeed shouldn't be considered as a financial advice nor I don't have any rights to encourage anybody to do so, just sharing my experience with my own point of view about what op called as a smart holding, the point is to find the dip and buy coins at the right time and the right lowest price... you need to be disciplined with your bankroll, common mistake is to buy it all at once and impatience!