Actually, we really do not depend on oil. There are many good alternative energy such as solar panels, vary of sized windpowers, hybrid vehicles, and many other machines.
Our new generations are hard to access money to buy the alternative machines because many old fart government agents/congress people have the money, but they won't do it. Some states have money for people to get it, but it is not enough money. I mean old people who work for the government for over 30 years, and I am pretty sure that they are addicted in the oil investments for too long.
I remember a story - A man invented an electric car or train in the 1940's, and a Ford Company found out about the man. Somehow, the company bought him out quickly, and destroyed the electric vehicle business. The Ford uses oil for its own cars in order to sell in the business. I am being to wonder that man who invented it was a deaf man.
If we have our electric vehicles (new verison) since 1940's, then everything would be very different - very little air pollution, and no reliable on oil, no background noise from vehicles. Maybe, there is no oil war. That would make a huge difference.