Which operating system do you use and why?

curious48:
that you try something and it'll work

I haven been a hard core Linux user for years maintaining Slackware web servers, writing background applications for RedHat systems and I use Ubuntu at home (currently 12.04 in a dual boot with Win7).

And no, it's not always an easy sailing with Ubuntu. One update demolished (to say it friendly) my printer setup and as a result my printer sharing with other computers (Windows, Ubuntu and CrunchBang) is down the drain.
Also, if I recall correctly, no support for my Epson scanner; I don't necessarily blame Ubuntu for that but it's something to be aware off.

I currently only use Ubuntu for banking and for email.

Things might have changed; I don't know.

My current view is that Windows is for the desktop and Linux is for the servers; no experience with Macs.

My list of current operating systems (both at work and at home)
Win XP
Windows 7
Windows 8 (currently most used system because I currently develop Windows C# applications mostly)

CrunchBang
Ubuntu
Slackware