The US is probably not the market most likely to widely adopt bitcoin first. Other places like Cyprus, Argentina, Ecuador, Portugal, Spain, will likely see the value of it before the US.
The US is also not the market that bitcoin would work best with. The US dollar is very stable and generally safe to use and hold. The currencies of the above countries are much less stable and are subject to higher levels of inflation and potentially major shocks during types of crisis. I would expect, over time that overall bitcoin usage in the US will be much less then in other third world and less economically advanced countries