I can't believe this is downvoted; this has been a mantra in the cryptocurrency community for years. If you don't control your private keys, you don't control

I can't believe this is downvoted; this has been a mantra in the cryptocurrency community for years. If you don't control your private keys, you don't control the coin. Traders take a risk in putting funds, fiat or otherwise, on an exchange. Many use domestic exchanges that have higher fees in an attempt to mitigate this risk. They are all well aware, but see the reward to be worth it.