> 2) Apple started to emphasize their environmental friendliness (including energy efficiency) in manufacturing process and product raw materials and has been a

> 2) Apple started to emphasize their environmental friendliness (including energy efficiency) in manufacturing process and product raw materials and has been advancing their game each year[2]. So a once more toxic product made 5 years ago might be manufactured less so. In the process of replacing this 5-year old product, it is actually moving us forward to a more environmental friendly life style. Similarly, like the light bulb evolution: incandescent -> CFL -> LED etc. That's an odd argument to make. Producing a new device (as opposed to continuing to use your existing one) will always be worse for the environment, other than with regards to your first argument (energy efficiency). Even with energy efficiency in mind, it's questionable at best - CPU/GPU performance is only part of the equation, and recent devices certainly don't use 12x less energy compared to ones from 5 years ago.