Originally Posted by Martian

Ubuntu (and Linux in general) is great if you don't need any Windows software. That means games, any proprietary Windows stuff that there's no Linux equivalent for, stuff like that. If you like to play computer games on your computer, Ubuntu isn't really worth using; Battle For Wesnoth gets old after a while.

Also be aware that there is no Linux distro that is as user friendly as Windows. Ubuntu is nice because everything's slick and easy to use, but you're still going to need to know how to compile and set up cron jobs and all that fun stuff. It's a steep learning curve if you're not familiar with the environment.