What is the reason/importance for saving energy?

I guess what I mean is, what would the effects be if we use it to extremes. People talk about saving energy a lot by doing things such as unplugging lamps/chargers etc that you’re not using, turning of lights, using blackle… But I can honestly say that I’m not 100% sure why I do these things. Thanks for any answers. Have a good day

Additional Resources

• The Department of Energy Cannot Afford to Save Energy | The Foundry: Conservative Policy News.
• Energy Saving Advice – Tips And Ideas to Save Energy At Home
• How to Save Energy with Energy-Wise Landscape Design