The Audacity of Obama

I haven't read his book, spoken to him, or seen him on television too many times but I continue to read of Barack Obama and the presidency.
The problem is that he did not have a groundswell of support that brought him into office. It was a scandal plagued republican challenger that gave him his boost. Now after 2 years in a position he would not have won had he been challenged by anyone who could pass a smell test he talks of the presidency.
If he engineered the defeat of his opponent he can talk legitimately, if it was by circumstance he (and anyone who believes his presidential ambitions) is being taken for a ride.
A friend mentioned that he thinks he is merely positioning himself for a run in 2016.