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Investing in a banks have less profit,its like we twnd our money to just sleep it there but in bitcoin yes there maybe high risk but its strategy i think that it would work is to invest what we can afford to lose inorder not to get panic everytime the value falls down.
yes we can only get less profits in banks but do you think that you can always get a high profit after you invest in bitcoin? no right? the value of bitcoin is verry volatile which means it can always fluctuate and when it fluctuates , you cant always earn a profit all the time but the profit that you can get in banks is verry much stable and it also increases annually or as long as you increase your investment in the long run.
now in terms of risks , both of them do also have a risk , not only on cryptos but in banks as well because there are chances that a bank can also will turn into a scam even if how trusted it was.