Do you think oil

[chowchig]

Maybe in 20-50 years we will be able to survive without oil, due to alternative energy sources, but at the present time oil rules the world for the most part.

In 50 years, it would be possible to survive without oil, but I doubt we'll stop using oil by then. Even if we run out of our current oil supplies, we'll try to get the more expensive and more environmentally damaging oil. One example of this occurring, that I like to use, is the recent popularity in tapping into the Tar sands in Canada, which I hear, is the equivalent of Saudi Arabia of tar sand. This stuff is a lot harder to process and you end up with a lot more useless "gunk".
Still, it would be nice to believe that we could be free of oil someday.