I use SUSE 9.1 at school and I have it on my computer with windows xp home.
I was brought up on windows, I know how to change every aspect of it.
I can use linux aswell.
I personally prefer windows, without all of its pre-installed apps.
for windows media player I have Quintessenntial media player
for Internet Explorer I have FIrefox
for everything it comes with, I have a different app.
Windows is good for regular people and people who like looking better than other people
Linux is for hackers and for people who like to customise everything and to laugh at windows ad ware/spy ware/virus -ware(lol) infections.
Downsides for windows is bad security unless you know what your doing (65% windows uses are STUPID.)
Downsides for linux is a vast majority of things to learn on how to do things, install things (Im serious, I need a damn forensic team to install jack on suse)