You must be crazy. There is no assurance that as people learn about bitcoin they will actually start using it. For many people bitcoins are just too hard to use. It seems like there are plenty of people who get all gung-ho for a little bit, but then they get bored and leave bitcoins behind. Bitcoins are inflating at over 10% a year right now, clearly the price is going to go down in the short term.
Bitcoin is like a drug, once you get a taste you can't give it up.
^ but what is bitcoin backed by 
Bitcoin is backed by the people around the world who are willing to pay money or render services in exchange for bitcoins.