10 to 12 times profit is 14 years is OK. Then it stops as per normal trading in financial markets. Now stock markets will most likely see -30% fall.
$400 to $7000 in 4 years for bitcoin is 20 times profit. This could be the reason Bitcoin starts falling from $6,700.
When will you sell Bitcoins ??
i am in it for the long run, I believe in bitcoin long term and think in 5 years the situation will be incredible. you should sell some maybe to recoup losses after this horrible bear market but im not looking to sell any time soon, i believe there is huge future potential