Maybe I should add another reason that looks increasingly compelling.
Until the turn of the millennium "newer is better" used to be a matter of course, no doubt, upgrade and it will work better. And old habits die hard.
But in the following that old-fashioned motto has been gradually replaced by the various "newer is greedier", "newer is nosier", "newer is trickier", in any combination thereof: in the course of those decades we all saw the performances growing logarithmically, the complexity growing exponentially, the privacy dropping to very near zero. Perhaps Microsoft got it started but it spread like wildfire.
Now the current trend seems to be to put a leash on all the users, to make them pay by the month for software and services that cannot be purchased anymore, to squeeze out of them any bit of even vaguely marketable personal information - with or without warning.
The new generations may have no objection to having a webcam installed in their bathroom, but we from the old school keep valuing our own privacy and our liberty to choose with whom we want to share our thoughts and our little secrets.