1) not surprised but not because Win 10 is that much better but because win 8/8.1 were total heaps of crap!
2) need to wait a while and see how many people carry on using win 10 now all the privacy invading things are coming to light. personally, i prefer to be able to do what i want on something i bought and paid for, not go down the Apple road and have them lock down a piece of equipment because they dont want people using their stuff in ways that isn't liked!
customers have been through all this stuff. if manufacturers dont want people to use things they buy in ways they want, dont sell the damn stuff! even worse when movie studios, for example, want you to buy their movies, but also want you to buy the burners, the software and the blank disks, but once you've bought them, you're supposed to put them away in the cupboard, never allowing them to see the light of day, let alone be used for the purposes they were made and sold! how damn ridiculous is that? and to make it worse, Congress or whoever makes this sort of thing law!! give me strength, please!!