Yes, I did it about a year ago, and couldn't be happier. I used to have dual boot of win and linux, mainly for gaming under windows. Then I simply stop gaming, and delete the windows partition.
Now I am a happy linux user, I know exactly how the system work, and it work exactly according to what I want. System take much better advantage of the system recourses. Everything I need to do with computer, can be done under linux, and in fact even done better than under windows. Now I simply can't stand the "bloatness" of windows!
Further, linux is generally much more secure, and never need to worry about virus. And it's under active development everyday. You will never stop being surprised by linux!
By the way, I started linux with Ubuntu, than Debian, than finally rest on Arch.