If I were your age I would wait a few years to see where aviation is going. There are not many people or energy agency's anymore who believe oil supply is able to meet demand after 2015. Difficult to predict what is going to happen than, but with $300-$500 oil it is unlikely that the middle class can still afford an ticket to sunny Ibiza. The whole future of (affordable) aviation appears to depend on projects like Richard Branson's algae fuel tests.
I think in two, three years time you will have a pretty good picture how responsible your investment in flight training is going to be.