if I in person like you to use Binance, as a result of the degree of the exchange is incredibly high and after all it makes me positive if Binance is very safe for mercantilism and provides you a awfully huge profit.
It depends, on preferences. Many people, want to have someone else responsible, if something goes wrong. It does not mean that, the problem will be solved by somebody else. I prefer, to take the risk, and pay the price of my choices.
indeed, the right behaviour is to keep control of own tokens but, sometimes, to avoid managing of multi wallets and keys, it's simple deposit on exchanges and waiting to trade them.
In any case, the amounts I decided to hold long, are in my safe hard wallet.