It depends what you use your computer for. Web browsing, playing music and videos and Word processing? Then sure, make the switch.
On the other hand, if you use any adobe products regularly, or game, you might have a harder time switching.
What I suggest is first run the Live CD, and get a feel for it. If you’re still unsure, dual boot with Windows. I wouldn’t delete the Windows partition, just because you may need it for a program, and a license key is expensive.
Here’s a link for the download. Try it out as a live CD and see how you like it.