For more than three years I've been using my mid-2012 Macbook Air 11" (8GB RAM, 512GB SSD upgrade, my first Mac ever, with external monitor) as my only machine. Never had a problem. The size is perfect for an airline seat-back tray. The keyboard and trackpad Just Work. I very much prefer the Mac OS after decades of Windows experience. These days I grumble when I have to do tech support for my wife on her Windows 10 s…
The retina macbook pros on the other hand are literally glued together and aren't user serviceable.