I hear you. I'm stuck on Windows XP due to using Logic 5.5.1, 2 x Audiowerk8 cards and 2 Unitor interfaces.
The drivers for the hardware don't work post XP, not all the VSTs I use work post XP, not sure if Logic 5 will work post XP (some folks say it does but without the hardware working I've not even bothered to try it) so upgrading this machine simply isn't an option.
I've been using this setup for over a decade and I've got somewhere near a thousand songs/mixes etc. in Logic. This setup does what I need and I can whizz round it at great speed so I don't give a shit what Microsoft thinks about upgrading. I'll be running XP until either the hardware dies or I do (with me being more likely to go first).
Just recently stocked up on spare motherboard, hard drives, PSUs, processor & RAM just in case
New does not always mean better (hell, look at Windows 8 - it's absolute shite