I use Ubuntu; I believe it's the easiest Linux distro for desktop use. I also hear great things about Mint.
For those unsure about replacement applications:-
Graphics: Gimp (similar to Photoshop) -
http://www.gimp.orgPhotography: Darktable (similar/better? than Adobe LightRoom, RAW image editing) -
http://www.darktable.orgMusic Production: Bitwig Studio (made by Ableton devs) -
https://www.bitwig.comVideo Editing: OpenShot (similar to Vegas etc) -
http://www.openshot.org3D Modelling: Blender (similar to Lightwave etc) -
http://www.blender.orgPeople used to say they'd use linux "when all their applications were available for it" - whereas nowadays I'm regularly hearing the reverse. Linux has the better apps and people are requesting ports *to* windows (the OpenShot Kickstarter was met partly to fund this).
Sure, if all you care about is MS Office then by all means stick with Windows. But, to dismiss the creative tools available under Linux is crazy. It's enabling a *lot* of people access to professional quality software at zero cost.
If you have any doubt about the quality of such software then check out some of the Blender videos:-
http://archive.blender.org/features-gallery/movies/index.htmlCan you imagine having access to such free software 10 or 20 years ago?
Really, I don't get the hate spewed here for Linux/GNU/Open Source.