So basically you want and high reputable exchange that never be a victim of hackings or not possible to get hacked so it will be totally safe for everyone to store their funds? That kind of exchange won't be exist, hackers will be always smarter time by time. Also, everyone are supposed to not storing their assets on any exchanges. You can trade and make profit there but store your assets only on your private wallet.
We don't need to have that kind of exchange as we are supposed to trust no one.
well this is why i do think we need a good decentralized exchange that are safe and cant be hacked, i believe in decentralized and it is safer than traditional exchange. But i do think decetralized exchange could still be hacked and it need more improvement which is will come over time in future.