I may be forced to migrate over to Windows XP in the next week or so. Why?
Internet Explorer 7.0.
Windows will squirt out the finished version to their XP slaves in tomorrow's updates, and they've crippled 7.0 to not support Windows 2000. I've used 2000 since forever, and have never seen any reason to change over to the latest Windows crippleware until now. But, since a significant proportion of my customers are stuck with XP, they will be migrating to the new version, and I will be at a loss in supporting their issues and complaints if I'm still running 6.0 on Win2000.
Supporting my primary website-and-database is the only use I make of IE, BTW. I shifted over to Firefox years and years ago, after it became painfully apparent that my using IE for day-to-day interweb trawling was a gaping, ineffectual, dangerous hole in our security.
But I've got piles and piles of applications implemented on Win2000, all of which still work, and show no signs of giving me any kind of problems. God only knows how many of them will get absolutely rogered by a shift over to Windows-for-Bill-Gate's-sins-sodding-XP.
You know, for all the talk of the auto industry and planned obsolescence, at least they didn't go out into parking lots in the dead of night & smash in the headlamps of last year's model when the new lines were announced, or refuse to manufacture replacement parts for old models.