That's it right there... mass adoption will not occur if it's to depend entirely on people (inconveniently) maintaining local wallets barring some major catalyst in which the human herd is driven to mass adopt through crisis (like what is sort of occurring in Venezuela right now, or happened in Greece and Spain to a degree before).
I think John McCaffee's date was a little soon... I feel like the fiat lords could kick their can down the road at least a couple more years (he could be right though).
Dear @jbgarrison, if the prediction of this man is going to happen, I think it does not matter if it happens two years later, it would be an event that would leave many crypt enthusiasts in a very good position.
If this happens that happens with the other cryptocurrencies, BTC will push them upwards
Very well said @jbgarrison72
ps. I would love to see John having lunch and his dick being served as a main dish :)
Yours
Piotr