The irony of decentralization

At the heart of decentralized systems today is a demoralizing irony. Vast resources---intellect, equipment, and energy---go into avoiding centralized control and creating "trustless" systems like Bitcoin. But hapless users then defeat the whole purpose of these systems by handing over their private keys to centralized entities like Coinbase. Or worse still, they lose their keys, sending approximately $14+ billion in cryptocurrency to date into the celestial dustbin.