Another serious problem is the distribution. Some early adopters may hold a ridiculously large amount of BTC that may make them some of the richest men in the world. Most people have to buy bitcoin from those who have them which are, early adopters (since half the bitcoins where mined in the first 4 years). These people have got an unfair advantage over others.
The only way to fairly distribute bitcoin would require the mass scale infrastructure of the goverment. And we all know how much goverments would like to see their currencies become useless.
If someone has 1 Million BTC and the price goes to 10k then they will have more monetary power than Bill Gates. This money however hasn't been created in goods and services but has been redistributed almost arbitrarily. I somehow doubt really early adopters will just give away 99% of their wealth. Even if they should.
This is clearly an issue. The more unequal the spread of wealth the more problems.
Here is a great video:
Paul Piff: Does money make you mean?Personally I believe that unequal spread of wealth is both a cause and a symptom. But the symptom is deadly in itself and should therefore not be ignored.
Some of the solution will come from philanthropy, some will come from better education/culture and I can't help some of it will come from some kind of voluntary basic income though I have no idea of how it would look.