Command-line is a big part of it.

I grew up on DOS and edlin and pre-mouse days.

I do a lot of different things but a lot of my time is spent on/with mailservers, web servers, db servers, network sniffers, perl/shell scripts, etc. With the exception of the network sniffers almost all of that stuff is better/easier/faster in some sort of "hi res text" (ie: a terminal on a high-res 24" monitor). And of course I use a browser and an email client, but those things are pretty much OS agnostic these days.

Windows also just feels "heavy" to me, and it feels to me like the OS is "hiding" too many things from me. I know what I'm doing, I don't blame anyone for my own stupid actions, so please don't hide files and subdirs from me. Don't require upteen mouse clicks to edit a simple setting...

Perhaps you'd like Microsoft's PowerShell if you have to use Windows. Microsoft is slowly realizing that many people like to use command line tools, especially for managing servers.

I tend to do a lot of things from the terminal these days. Maybe I wouldn't if they'd FTFF.