On the contrary, I used Linux for a number of years when I was younger, as I thought it was fun, but now that I have real work to do Windows is quite a bit more productive. The interface is a lot smoother, and the programs I need (namely Mathematica) work a lot better under Windows. Hell even the Windows version of Emacs seems to be quite a bit more stable. This is not to say that there aren't certain capabilities that I miss from Linux (integrated sftp in file browsers, bash scripting, etc.), but equivalent capabilities also exist in windows (WinSCP and Microsoft Command Shell, though I have yet to try the latter, not to mention cygwin). Your comment about training wheels is pretty stupid. To some of us computers are just tools, not the focus of all our interest and energy.