1. This exchange hack won't lose you any money, because it's insured. 2. You should anyway only use proper exchanges, then it's like using your current bank.

1. This exchange hack won't lose you any money, because it's insured. 2. You should anyway only use proper exchanges, then it's like using your current bank. 3. You don't have to use your own wallet. Cryptocurrencies gives you the opportunity to do so, but it's not a requirement.