Just in defense of the weak US dollar aspect, people really should be looking into the bond market. With QE3, the Federal Reserve has fleeced many people who don't understand how treasury bonds work. They're a reason other governments are only holdings short-term bonds these day. Since the power of the US dollar is so closely related to the bonds market and interest rates, it's a recipe for disaster considering the egregious amount of national debt looming on our shoulders.

It would be worth everyone's time to do a google search on some terms such as "EQ3", "Bonds Market Collapse", "Treasury Bond Interest Rates 2013", "US Debt Default Consequences", and "February 2014 Shutdown".
These are all very real things and give very sound reasons why to have money in Bitcoin right now.