Hello everyone, I am pretty much set on purchasing a 2015 MacBook Pro (refurb) from Apple after reading all of the horrific stories I've been reading about the current 2017 models (keyboard issues etc). So my question is with every new iteration of MacOS that comes out in the future will it be compatible with the 2015 model MacBook pro? I know with iPhones the older the phone gets the more issues you have with newer iOS's and was just curious if this was the same for the MacOS and older MacBook pros? I plan on keeping it for a few years as I have read that the longevity on these laptops are incredible. thanks for any help!