In your opinion, what are the biggest challenges facing the widespread adoption of cryptocurrency?

We all know that with the various regulations that various governments around the world put on crypto, that it is a hurdle in the way of global adoption of cryptocurrency. The promise of deregulated currency, is that it can offer people more access and control over their finances, without the need of going through a regulated back. But what does anyone else think? What, if any in your opinion, are the biggest challenges facing the widespread adoption of cryptocurrency?