Ofcourse bitcoin have growth too much this past 2years when the price of it x10 so if you 1btc way back in 2015 your a millionaire now and it will stop flying high.
yes you are right that the price of bitcoin increases a lot and according to me the latest price is about $7500 which is really awesome and i don't believe that the price will grow like that any way now the profit of bitcoin become double and those who have btc are in profitable life.