Just wondering if I should buy a 2012 11" mba. I want to use computers years, not to find a replacement for every now and then and I'd like to pass old ones to my family. Any statistics anywhere about lifetime of a "modern"(=throwaway) macbook? EDIT: Just checked that ssd's are soldered only in new mbp and mb. So, this poll's question is about how long the original ssd usually lasts?