Bitcoin may be user-friendly enough for most of the typical millennials and for the more tech-savvy boomers, yes, it's definitely not user-friendly enough for 100% of the population. But hey, a some years ago we'd all have to download Bitcoin Core full node for us to use bitcoin. But now? We've got SPV wallets for mobile phones, and hardware wallets that's a perfect balance between usability and security. Who's to say were stopping here? There are so much smart and talented people working on this industry. Technology will move forward.
Yeah, but I think that's user-friendliness is not the main problem. Some people, for instance, are really afraid of volatility. They are used to the stability of fiat, and they cannot feel safe around something with such an unstable price. Another problem is that Bitcoin is not suitable for small transactions performed by a big amount of people in a short period of time, and this is the kind of transactions we mostly perform. The waiting time and the fees are just not acceptable, and when it comes to Bitcoin LN, I think its major problem is that it's not user-friendly, and some people think it's too centralized.