Technically, it is safe to put money in the banks simply because it is registered under government institutions, meaning, all transactions are tracked. Bottomline is, the value or amount you have put in there would remain the same for a long period of time unlike with putting it to other digital asset. For sure you are trying to persuade people to put their funds on cryptocurrency, it would be a good idea only if they can endure possibility of losses. Putting your money in cryprocurrency will give you the opportunity to grow your fund but will also put your money at risk given that market prices are volatile or changing from time to time. Decentralized exchanges are not banks.