Umm, no.
Although console owners who have always used a controller are happy with them, most PC gamers do not like using a controller for things like FPS or RTS. Valve are trying to come up with a solution, a different type of controller that offers us the precision we want. Its not the same as just using an XBox controller to play existing games.
Hopefully they can get it right.
You sure you can speak for most PC gamers, fella?
For a long time, I've been using a 360 pad for every game that supports it. including FPS. It's super comfortable, and since I'm only playing single player anyhow, I don't feel that it hinders me (at all, actually).