People lose more money every year stored in their bank accounts and atms as compared to Bitcoins, the only bitcoins that get stolen are because of either carelessness in handing private keys or investing in scams.
i think no people lost his money in bank, it's just lower interest if we compared with bitcoin interest (rising price).
but i think not all people who stored his money at bitcoin get interest, growing his money, some people who buying bitcoin in $700 and hold it, now lose arround 20% of his money.
yeah but things can be changed in future. even I am pretty much sure things will get changed in future 100%..
bitcoin price dropped little bit but it will raise again and everyone who invested when the price was 700$ they will also get profit. this is the game of patience. anyone one who have strongest well power well be in more benefit..
and banks won't give this amazing feature, but there is no chance that bitcoin can disappear banks. banks will remain.