Linux for me was a windows replacement and it still is, but I do find doing stuff in win7 to be much easier then linux. The RDP client in windows is much more robust, and better then gnome-rdp. Performance of the RDP client is much much better and gotomypc (used to access my desktop) works in windows not linux (I use vnc when I'm in linux).
Overall, I like linux better, but I want to be able to get my work done efficiently and so far it seems win7 is winning that battle.