The thing with most of these programs is that they´re dependent on the Desktop part of Windows 8 to work! So while we´re still trying to get accustomed to this new Metro style mess for the sake of Windows 8's future suddenly we´re transported back to good ol´ Desktop and we suddenly realize "why the fuck am I even bothering with Metro?"
This is the huge problem that Windows 8 has, I have said it to everyone who has asked me about it, what Windows 8 accomplished imho is to fragment the overall user experience instead of enhancing it. As of right now Metro is just a big "WTF"... maybe months after Windows 8 comes out and people develop a lot of commonly used software to work in Metro made then maybe Windows8 will have a stronger appeal and a better user experience, but as of right now.... WTF Microsoft?