One of my favorite things about Linux is how it just works.
Think about the last time you did a fresh install of Windows. You spent probably a good few hours installed Windows, which left you with a crippled Web browser, Notepad, 4 card games, and maybe Windows Media player. You still had to install games, an office suite, a decent web browser, anti-virus, anti-spyware, cd/dvd burning software, photo software, music software, etc.
Last time I installed Linux I instantly had a full office suite, three browsers, 3 mp3 players, several games, several photo editors, and more software than I knew what to do with. All included. All free. And when I wanted more, it was just there in the repositories, no hunting down downloads, paying, or buying cds.
Instead of wasting time and resources on AV and AS, I just know I am safe.
If you still need Windows, I recommend at least having a linux partition. One time Windows became unbootable due to a virus, and I was able to "rescue" all my unbacked up files in Linux and burn them to a CD. Even though I wrote the papers in Word in Windows I was able to open them in Write in Linux, burn them to a CD in Linux, and read them again in Word in Windows. It just works.
Let's look at a few other tasks.
Resizing a picture: In Windows, to resize a picture you need to find the picture, get a program that can do resizing, install that program, and right click to select that program, open it, and resize. In Linux usually the default program can resize.
In Windows when I upload from my camera I need to install drivers, then upload. In Linux my I plugged in and got a pop-up asking me if I wanted to upload.
I could go on and on.
Linux is not without it's problems. When you do need drivers, finding them can be a problem. But I do recommend you give it a try.