Whether you are an investor, a college undergrad, or someone who is just reading articles late at night because you cannot sleep - the US GAAP - IFRS SEC reporting treatment affects you. Financial statements should have full disclosure and should aid in the comparison of multiple investment options. The lack of a reconciliation from IFRS earnings to US GAAP could mislead investors one way or another. The way that accounting standards are set up, it is most likely that the company reporting under IFRS will look more attractive, as they typically show higher earnings.
On the other hand, not including a reconciliation in the footnotes to the financial statements saves a company a significant amount of money. This encourages companies to seek investors in the US markets, which helps the overall economy.
There will be many changes over the next few years and it will be interesting to see how any changes in accounting principles used for financial reporting will effect our overall economy.