Got a 2015 MacBook Pro 15". Runs great. Zero issues. I use it for media consumption, writing and light Photoshop work. What exactly is High Sierra going to do for my MBP that Sierra doesn't? Speed? Stability? More colorful screen? Better Internet connection? Lighter weight? Invisibility? But seriously, what am I missing out on by not upgrading? I'm baffled by the whole High Sierra update.