I would like to know what is the Average Lifespan of a Brand New Retina Macbook Pro 15" the model with Dedicated Graphics Card with some moderate use (Not Heavy and Rough) e.g Extensive Internet Surfing, Moderate Gaming, a Little Less extensive but not Very Extensive Video Watching and Moderate rest other stuff. But If taken care properly like handled well. How much could it go on to Maximum in terms of Years ? I know it can till 5 Years but any guesses on what is the Maximum it can go beyond 5 Years.