Dear newbies, please treat exchanges, such as Binance, KuCoin, Kraken, Huobi, OKX, and Coinbase, as marketplaces. What do I mean? Just as you do not leave your goods on the market after you have paid for them, you take them home with you. Consider your coins as the goods you bought at the marketplace.
Most people think exchange is their house and not a market, they believe is a place where your funds can be secure, but they don't know its kind of risky leaving coins on exchange, some people always say they prefer leaving coins on exchange because it can easily be traded whenever they want and they don't have to be transferring coins from wallet to exchange, some people always say they prefer leaving their coin exchange because they can easily reset their passwords even if they forget it, but if private key is lost, then you won't be able to access your funds again.
But I noticed that most of those people giving reasons why they prefer leaving coin on exchange have not experienced any crypto hack before, they won't have being giving all those reasons, most of them have not lost money in any exchange hack before. Immediately after buying a coin we should always make sure we transfer it to our non custodial wallet address to have rest of mind, no exchange is to big to be hacked or compromised, we all have to be very careful.