Bitcoin is not a medium-of-exchange. It is a unit-of-account and a store-of-value. Litecoin will be the medium-of-exchange. Small blocks will make Bitcoin for settlement amongst power brokers of finance.
It's been a long time coming
Bitcoin is the individual's method of garnering a similar handle on wealth. Ripple and other systems will develop into more effective fiat replacements, allowing Bitcoin to act as a settlement currency - gold's digital analog.