Actually, there is a risk there. If you are keeping your bitcoin most of the time in an exchange, there's a chance that they might get hack and your funds will be gone forever. Binance is no exception because they've been attacked before and good thing that they've refunded all of those affected users.
If you're for the BTC/USDT pair, you have to be cautious about that scenario because if not, I'm not wishing though, that incident may happen again.
Just keep it on a safer vault or storage like hardware wallet and just sell and transfer it to an exchange if necessary.