Robin 'Roblimo" Miller has an interesting bit of flamebait over at Linux.com, talking about why it's so hard to switch operating systems or desktop environments withing the one operating system. His point seems to be that our deeply-held preferences are established by first impressions (or even chance), then entrenched by habit, no matter how vigorously we might argue that we have a rational basis for them.
I'm not sure I agree with him; GNOME is a better desktop environment than KDE; both are easier to use than the WIndows or Mac user interface; nano is a sensible choice for a programmer's text editor, because... ah... okay, maybe he's got me there. ^O ^X