If oil runs out, we would not be able to drive, use air conditioners and our life might be without electricity. Could you imagine how inconvenience it will be? I guess this will be happening soon, maybe just in 100 years. Life without electricity is horrible. I can’t live without TV, refrigerators, cars, and so on. Electricity plays an important part in our life but without oil, it will be more difficult to make electricity. We also have other energy to make electricity, but they are becoming scarce. Someday, people may fight for energy and do anything to control it. I think it is a worst-case situation, and I don’t want to see it. I am glad that I will be dead then, but we still should appreciate energy and save the Earth. It is not only for us but also for the future generations. It’s better to walk than to talk.