I dual boot Ubuntu 7.10 and Windows XP. I've used Windows all my life, and only installed Ubuntu around 6 months ago. It's fun to play around with, and it's honestly really cool, but I agree that it does get old. Also, while I have been getting better with it, I am still more productive with Windows since that's what I'm familiar with. I've only used Mac OS X a couple of times, so not enough to decide if I like it better than Windows. I think I would like it, but I probably wouldn't get one until there's more compatibility with them (and it seems more and more is moving in that direction.)