I travel quite a bit, and recently purchased a 15" Macbook Pro to replace my black MB. There is no way I'd want to take the MBP with me and expose it to the elements, thieves, and/or my own personal clumsiness. Windows is ok, I use it on occasion and have Win 7 on my new MBP as well as a Thinkpad. But, even though the interface is much better, it's still windows after all, and a little boring. I have had Macs since the Mac Plus was released, so I'm comfortable with the OS. OS X is much more powerful than some posters would suggest, with much of that power lying beneath the graphical interface. It is an UNIX offshoot after all. If you are hobbyist, and enjoy playing with source files, have at it with either Macports or FINK. Thousands of interesting things can be found in either. I'm using both on my netbook without a problem btw. Then, after you're done playing, you can relax and come back to the stability of the Mac, where things normally, just work.
Oh, and it's a very cheap way of doing all of the above in a minimalist way thanks to so many on this board!