being able to divvy up a desktop into 4 quarter panel windows on win10 with near zero effort absolutely changed my life, i think of how much time i've wasted clicking back and forth between two windows stacked on eachother, or having to manually move/size windows to be next to eachother... i dunno. i held out as long as i could before caving to a 10 upgrade out of necessity, and it's a shame that windows has built such a stigma like that because (once you go in and rip out all the junk) it's clear microsoft has decided to embrace alot of conventions paved by linux/unix/gnu/whatever - little things like recognizing shift+ins as a 'paste' command - and has really improved desktop management overall.