A coupla reasons my friend showed me why Linux (Fedora) is better than windows.
XP sucks up more RAM than an asian kid does to a teacher when he's got an 89.9% in a class.
Organization: I backed up my HD on a SATA HD for a bit and transferred the files using linux. The speed was so ...beautiful... (I'm told Linux organizes and transfers better than Windows in terms of speed)
Open Source: Who doesn't love a free program you can alter? ID software supports open source and even made doom 3 open source for linux.
Security: If you don't fucking implement the virus in your computer and choose to run it, you'll be fine. No, really, you'd have to write up the script or something to run it after you "root" it (I believe is the term that was used)
However, there are the not-so-greats
Basic coding knowledge is a must...This filters out at least 60% of the users on computers.
Compatibility issues: Nobody wants to deal with them...
Messing up: Unlike Windows, you can accidentally get rid of the script that starts up your computer as a linux running machine. I speak from experience.
Tech support: I prefer an actual tech support as opposed to a forum if I ask for help.
In short, Linux has plenty of rewards if you know how to use it, however many of us don't have a good grip on coding and don't plan on learning it too soon.
I wish to learn and I shall soon. My sister's boyfriend gets out of Basic training in the army in five days and comes here in one week. He's selling me his desktop, which has Xp and Fedora on it. Plus the fucker never returned my 200GB SATA HD after I lent it to him

. Huzzah!