It's amazing that people keep supporting Apple despite it being so obvious that they are not doing it in the best interest of the customers. Think why wouldn't Apple keep a pro lineup that offers upgradable parts for the cost of little more weight and size(that theory itself is bs but anyway)? My MacBook Pro would work perfectly fine for another 5 years if I can upgrade the ram and replace my battery(which I can but have to give to service centre or risk myself with a complex diy procedure). The retina MBP have reached a pinnacle of laptop if you ask me with very minimal upgrades happening over the years. The CPU performance have improved but for most of the tasks I do it's going good and probably will hold itself for another 4-5 years provided I can upgrade the ram so that it can accommodate apps built by developers with modern computers with lavish ram.