Use exchange for trading not for storing that is the actual content of not your keys, not your cryptos. But if we are going to stop the centralized exchanges then you will lose profits as a trader so you have to accept such risk that exchanges can be hacked at any time. So just move funds to your wallet if you are not going to trade in the near future.

For example, you are trading at Binance and the exchanges got hacked where you had few thousands worth of cryptos but the exchange itself claim that all the users funds were protected by SAFU which means the exchange will take the responsibility for the hack and they will pay the users from their pockets.