@Piru
Well, I have used Linux and I do think it is a great OS, albeit I have trouble with those who say that it is ready for the desktop, because I do not feel that it is that far along yet, but given time and development, it might get there. The main problem I see with adoption of Linux to the Desktop is that the Linux community can not or perhaps more accurately, will not agree upon any standards. Until this can be worked out, Linux is not viable as a desktop OS. Though many servers are happily running it fine!
My choice (since that seemed to be called into question) is actually FreeBSD and Mac OS X. FreeBSD on Intel for servers and Mac OS X for the desktop.
While I think the Amiga is a great platform as well, I think it's future is also going to be based on some *NIX underpinnings. Heck, we could right now write a GUI that acted and felt like our Amiga (most likely looking like OS 3.9 mostly) and put our GUI ontop of FreeBSD which is modified for our purposes (eg Darwin) and we have a modern AmigaOS. This is my grand vision for this beloved platform... combine that with high end hardware and a good base of developers and you have a MS killer.
I feel that MS is the Communist party, they are the ones that feed propaganda to further their cause. They to me, represent all that is unholy and wrong in the world. That is purely my own opinion! Heck, if Open Office would become Macintosh (Mac OS X) native, I would dump MS Office now. That is the ONLY arguement for the Linux desktop (again speaking in my own opinion).
Generally, I only deal with MS products where I have to.