If I buy just 5 bitcoin today 2500$, Next 5 years bitcoin will be 15000$
this is the way that I should invest or not?
Definitely,bitcoin should be invested in a long term basis and not on a short term basis like altcoins.If you invest it in such a long term basis,you need not worry about the temporary fluctuations.But,we could not exactly predict that bitcoin price would be $15,000 in the next five years.