or maybe price of btc will be down in 5-10 year
just imagine about future of btc and tell me should i save bitcoins for future or not...?
if you have doubts about price in future i can say that price will be much larger than now as in 2 months we will have bitcoin block reward halving, so price will rise then for sure
so i think that it is really worth to invest in bitcoins and save them for year, or even more than 2 years as bitcoins will be more popular later so their price will rise too
Saving for more than 2 years is not profitable. In 2 years I can make more money by using it actively in exchanges rather to save it for years. If price will bloom in the next 2 years I will get more value in terms of exchange rather than the fixed value of those save coins.
Saving too long can never be profitable as we don't know what will be the price after two years, and if price falls then you need to go through huge loss.