And this question will probably be followed by
What incentive do I have to delegate to an independent pool when BINANCE delivers better returns?
Without getting into complexities, you've probably heard the phrases:
"The higher the risks, the higher the returns."
"If you don't have the keys, you don't have your crypto."
What happens is that when you store your ADAs in Binance you don't actually own your ADAs because you don't own the keys. You are trusting that Binance (a company, centralized) will allow you to extract your ADAs whenever you want, but this might not happen for various reasons.
So, since Binance is a centralized exchange, and this implies higher risks than "storing" your ADAs in a decentralized wallet (Yoroi, Daedalus, Atomic Wallet, etc), Binance needs to counterbalance that risk with higher returns. Otherwise, why would you accept the risk of leaving your ADAs in Binance?
Add to that, when you do staking in Binance, the company uses your ADAs to generate higher returns which I can return in the form of higher staking rewards.
The important question is then
Are you willing to risk your ADAs in exchange for a few percentage points of extra profit?