My $0.02
After the 8.1 update comes out it MIGHT be easier to work with. Booting directly to the desktop, which was possible in the preview version but was removed for the production run, will be returning in the the update which is coming out pretty soon. When I get the time I will be trying all my Process control related apps just to know what to expect. As it is my Win8 machines are just for routine Office work, and they are fine for that.
The big push from MS and Apple was to go to the "cloud". The vision was on of all the apps you need delivered or served from the "cloud"(i.e. Office 365, Azure etc). If that vision was adopted then our vendors would follow suit and the metro interface would work for us. But now with programs like PRISM exposed, the cloud is not nearly as pretty as they sold it to be.
But having said all that, if all your work is done on the desktop (as mine is) and not in Metro ( or whatever the patent lawyers decide it can be called) there isn't much point in moving to Win8 except to get a leg up on the future versions of that which we will all be forced to deal with.