Tell that to traders. There's really no other way to trade without keeping open positions and stop losses. Some people trade with leverage and you also can't do it without keeping money on the platform. While I don't keep money on exchanges, I don't think it's the fault of users who want to trade. All responsibility lies on the exchange. If they can't secure the platform they should never open it up for trading. So many of these people who run exchanges don't even know what a cold wallet is or deliberately choose to ignore them because it's too much of a hassle to have to transfer coins between wallets and pay fees.