well thats a big reason why cryptocurrencies where invented and its the beauty of cryptocurrencies, you dont have to trust anybody and its save. you have a decentralized, almost unbreakable bank, that you dont have to trust. You on the otherhand can be hacked, but you're properly not a big target and will be only targeted by mass trojans and phising. An official ETN online wallet, that holds a big percentage of the funds on the other hand is a big target. So you can trust and use whatever bank and online service you want, but dont compare them with cryptocurrencies.
Oh sir, you have to gain enormous trust in crypto world, otherwise you're completely f**ed. I can tell you about at least 20 ICOs which were direct scams and people ran away with money. Real money.
The idea with crypto is to get rid of greedy banks (and yes, to decentralize the trust also). However, there's still people involved and people are scum. No one cares about you and everyone is looking up only for themselves and if they see the opportunity, they will backstab you any time.
The first lesson we learned when Internet was "invented" still applies today:
TRUST NO ONE, QUESTION EVERYTHING.
If you still think different, let me give you the link for my super secure online USD wallet, heh? ;)