Local communities don't have bitcoins - it's all stashed away by the intrepid Smeagols hopping to strike it big. So for the average consumer trading in bitcoins means first exchanging money for bitcoins, a completely futile undertaking.
Huh? If intrepid Smeagols (like me) didn't control more than a few BTC they would somehow pour down on communities in some afternoon rain shower? Your statement makes no sense that I can see.
Let's try a bit harder then. If Smeagols have at most a few BTC they are no longer Smeagols - the 7 millions or so coins are distributed to over a million people. Collectively they make up a large community and the network effect is strong enough to enable trade within it. If a few hundred Smeagols hold the bulk of the money supply and a few thousand others the rest, and they expect millions of people to come and buy it from them, that's not a currency, that's pump and dump.
Some niches that USD covers badly are savings due to devaluation,
Fabulous plan sir, the pensioners should invest all their wealth in shady internet money.
and anonymous funding...particularly of organizations which are out of favor by the powers that be.
Bingo ! Yes, that's a role that bitcoins can fulfil nicely. It can be a good currency for online criminals. Good for e-shopping in markets where there's low penetration of credit cards. Good for inventory with high chargeback rates. Good for narcotics also. Good for opting out on taxes - and that's not even immoral in most of Europe, it's survival.
Those who don't like to be associated with some of those actions shouldn't mess with cryptocurrency.
$5/BTC is amazingly low in my opinion give the currency base, the population of earth, the troubles with most of our currencies, the apparent robustness of the Bitcoin solution
Here we go with the self-righteous pump and dump scam. Sure, every person in the world deserves a few satoshis of his own, but not before they make me rich beyond my wildest dreams. I am a Bitcoin aristocrat. I had the foresight to invest in the currency of the future, so I own a sizeable portion of the known world. I'll pick Hawaii, thank you.