Is having the latest technology a want or a need?

How often do you get a new cell phone or mp3 player? Did you really need a new model? Do you consider the environmental impact of these purchases? If you are addicted, how can you break your addiction?

In my opinion it's a need to have latest technology. I get a new phone like every 2 or 3 years. No i didn't really need a new model. It's an environmental disaster, because building every phone requires the polluting extraction of irreplaceable elements like gold, cobalt or lithium.By not caring about newest model every time it comes out.