There is of course a difference between wants or needs. Having the latest technology is defiantly a need. We can easily connect this subject to sociology. In sociologist deeply discuss wants and needs and how the community affect those things.
   How often do I get a new cel phone or mp3 player? I try to use my cel phone as long as possible. 2-3 years are the most coming ending time for my cel phones. Did I really need a model? Yes i did. Did I consider the environmental impact of these purchases? of course I did, but I think it is necessary to have a working cel these days. If I´m addicted, how can I break my addiction? By being more aware of how these wants affect the carbon footprint.