"Long term" - most likely I'd be dead by then, so who cares? I'm leaving a royalty-based business and bitcoin account to my daughter (who is oblivious)...
Probably not for a long time as the mighty Dollar can be ugly but sort of pretty versus all the other really ugly ones. Also, people have been preaching about the demise of the USD since the 1970s. One year they'll be right.
The USD is going to shits especially after that insane liquidity injection...and everybody knows it. The US has a history of devaluating it's own currency to deflate their debt at a higher rate than other countries because...well, they can. Japan is already talking about defending USDJPY level of 100 because everybody knows the US is trying again. I'm pretty sure we see EURUSD levels of 1.30 to 1.40 mid term @TradeTune : Find a way to hedge. Either swap into EUR or CHF if you can. BTC is not a solution until you know how to hedge it's volatility with derivatives.