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Borrowing for investing is usually a bad decision. One must invest only money he affords to lose. The only "good" way to borrow for investing is if you have plenty of wealth, but it's already locked (properties, companies) and borrowing will provide liquidity.
Also for normal people, I'd suggest to invest
only part of the savings, not all. Some should stay for unexpected problems.
However, these are (small) details. The initial rule stands.
don't really agree with you because there is still the possibility of a bank borrower making a profit if he/she invests his/her loan in the long term...
if have low interest rates and can pay in installments over several years then why not borrow money from a bank for crypto investments because not everyone has cash or large assets for them to buy into Bitcoin for example. even though it is risky and too wild, but if you are right in choosing the coins you want to invest, then you will definitely make big profits.