For me, not for now but probably yes for the future.
My reason:[*]Linux is a very good and stable OS, but still cannot match Microsoft's Windows GUI and user friendliness.
[*]Linux is harder to deploy compared with Microsoft Windows even for power users. It took me more than 1 hour to install graphic card drivers in Linux, but in Windows it took me only few seconds to 'follow instructions on the screen' to install any device drivers.
I will consider to use Linux as my main OS only after:[*]Most general or advanced settings, options or configurations can be configured directly from the GUI.[*]Natively support multi language
[*]Many softwares can be installed without typing commands in the command prompt.
[*]Good multimedia supports (Digital camera, Webcam, DV camera, DVD, etc)[*]Have good support of my favorite 'Win32' games 
My reason:[*]Linux is a very good and stable OS, but still cannot match Microsoft's Windows GUI and user friendliness.
[*]Linux is harder to deploy compared with Microsoft Windows even for power users. It took me more than 1 hour to install graphic card drivers in Linux, but in Windows it took me only few seconds to 'follow instructions on the screen' to install any device drivers.
I will consider to use Linux as my main OS only after:[*]Most general or advanced settings, options or configurations can be configured directly from the GUI.[*]Natively support multi language
[*]Many softwares can be installed without typing commands in the command prompt.