In the next five years from now I think bitcoin will still be there, and if you believe in the law of fluctuations, at that time the price might be higher than now and up 300% - 500%. Bitcoin aside from being a lucrative gold mine, he will still be an investment asset which is tempting throughout his existence.
Bitcoin has been here for almost a decade so that's enough to say that it will survive and keep on going until five more years.
Halving will commence on 2020 which is around 2 years from now so that's another great event for bitcoin which expectedly to give positive impact. And having that impact, that will create another reason for most people to stay to bitcoin. Adoption is increasing too and it can also be considered that bitcoin is just getting started.
In my opinion more and more people will invest in bitcoin. The market cap will increase more than 100 times of today. More countries will accept bitcoin and more companies will accept bitcoin as their payment. The use of other currencies will reduce due to the overcoming of bitcoin. We will reach near to cashless society and bitcoin will be the main usable currency.