Give it 3 months after the currently hoarded exploits for Windows XP are put out (awaiting end of support announcement) and they will not work any more.
I get that people don't want to change. But they are going to have to. Whether it be to Linux, a tablet, or whatever. XP is not going to remain an option for long. Man up, take the short term pain, and get to something maintainable and secure.
It has worse multi-monitor support in my experience, the hi-dpi scaling is incredibly brain damaged and wants to scale things to different sizes between my 2 displays. I cant turn that off. Applications still open on a random monitor irrespective of which one i launch them from. It starts up faster because it doesn't start everything Windows does - stuff that i might want like oh I don't know - the desktop, and reconnecting to network shares (they are delayed until 5 minutes after login).
I've run 8/8.1 for 6+ months both at work and at home, and have downgraded back to 7 at work and am getting things done faster. If i include power button to opening things from the network - windows 7 is FASTER.
Power button to login screen on Windows 8 is faster, but that isn't useful to me.
Its not a perfectly good computer any more. It is an old, unsupported security risk. If you don't want to buy new hardware that is capable of running a supported version of Windows, and money is tight, then you should seriously consider running Linux.
That said, I have junked hardware capable of running Windows 7 and Windows 8.
"It's the best thing since professional golfers on 'ludes." -- Rick Obidiah