Re: I need bitcoin to be $690 to break even.....will I make it?
Don't you think if the US would start raising interest rates then investors would prefer a currency that yields % by itself instead of picking BTC that yields no interest whatsoever? 
Even without increasing the interest rates, people would still be much more interested in putting their money to yield interest for them rather than putting it in form of BTC that yield no interest. However if there is much demands for it and the price of BTC is high enough than this interest rates wouldnt be a problem at all
The 'problem' is that interest rates determine that demand you're referring to.
The Aussie Dollar and the NZ Dollar used to worth so much and now their currencies plunged against the USD because of expectations of rapid economic changes in the US, so it's hard to think that the faith of BTC would be different.