I've used Windows 8 since launch and tbh I actually really like it.
I've not experienced any lack of support for any kind of software at all, and I generally find it much faster.
Everyone who complains about the lack of start menu - the only time I ever used a start menu was when I needed a specific program in which case I clicked start and then started typing to search for the thing... That's exactly the same for Windows 8 so I really don't see the problem.
It's just learning a couple of tricks really like 'Win Key + X' which gets you most of the Control Panel settings, and that actually makes things easier than Windows 7 IMO.
The multi monitor support in Windows 8 is far better. You don't need to enable Nvidia Surround or Eyefinity, and Windows recognises each screen individually from the beginning. Tiles or whatever they call that these days only comes up on one screen too.
I will also add the Windows 8 driver support is far better. Pretty much all the wifi cards out there (modern ones at least), along with all ethernet drivers, are auto detected with Windows 8 so after a fresh install you don't need to worry about getting Internet drivers from another PC or disk just to get everything else downloaded.
The only complaint I really have is about the apps which are terrible - but I just don't use them so it makes no difference at all really.
After using it for a few days and getting used to it, you do end up finding it a lot smoother, and I prefer it by quite a margin to 7 nowadays.