The ugliest truth of bitcoin is that it just isn't useful in any legal fields.
Bitcoin being accepted as legal currency in Japan and South Korea aren't... legal? Or do you mean, you can't pay most lawyers with btc? Actually, I'm sure you could probably pay off a judge/politician easier with bitcoin than cash haha.
From that time I have earned a lot more then I did with bitcoin mainly with XRP, ETH and lately also EOS. For me, bitcoin is for bartenders and cab drivers who react on technical developments with a several year delay.
What are the technical developments of XRP, ETH, and EOS that surpass Bitcoin? It would be nice to know now, rather than a year from now.