I love'em both.
This will sound silly but I'm such a novice with Linux that I got all excited last week when I managed to install LAMP on Ubuntu on a VIA mini-itx box.
The other thing I like about Linux is that it allows me to use my old laptop productively, without having to dish out big bucks for a Windows installation and all the virus checking software and tools I need on Windows. I got the laptop for free at work. Now I use it to blog, surf, prepare documents for a class I'm taking...It's great.