Such as ...?
FYI I am typing this on a Windows 7 system I have at home. I use more yes I use VMware workstation with my 16 gigs of ram to simulate domains and do testing and lab work to sharpen my IT skills. But I am not typical. So I am not a 50 year old who hates change at all and wanted to clear that up first.
Security wise excluded XP works for business except in niche cases I see and it is very very expensive to switch and gpos, app certification, and many other steps are needed for something that is not required does not make sense.
XP works for 1/3 of the users on the internet. Windows hit the maturity point with XP and now there is no reason to ever change. As the years go by when 2019 hits and Windows 7 goes EOL anyone needing more than 16 gigs of ram and a non raid SSD will be even a much smaller niche. Again no need to change unless MS wants more money.
Yes you like technology and some newer graphical effects and kernel features are cool. But HR does not utilize 4 cpu cores to write a report, check email, and go to taleo to screen an applicant. This is a new age and yes post PC era. Phones need upgrading hell of a lot more than desktops as the benefits go down each new release.