W10 had a pretty rocky rollout, and was full of bugs during its first couple of months....which is probably why it developed a negative reaction from so many of the early users. Most of the problems were fixed by early November, and installations since have been fairly trouble free.
Technology marches on, and virtually everything related to computers eventually becomes Obsolete...so change is inevitable. There are probably many people still using W95 and Vista, but more and more, the old programs will cease to function with newer applications, and expose the user to the increased possibility of hacking and viruses, etc.
If the "rumors" are correct, at some point MS is going to release an update that forces everyone to W10...whether they want it or not. You might as well start planning on upgrading, at your convenience...instead of letting MS "surprise" you some morning.