why linux instead of windows 7?

hi guys, ok so my question is, why chose linux instead of win7?

ok so ive google it and readed some of the topics and the main reason is:

faster.

more secure/safe when thinking about virus and stuff.

more free software.

linux is free.

win7=

compatible drivers.

softwares is comfotable

easy to get around couse its probably the operat system you used most or only.

its more user friendly

games running comfortable

ive listed about some things good, and nothing negativ, but my question is...

why linux?

im about 19 years old, im using my computer to download movies and play game's for mostly,

and used windows all my life, so there is like nothing for me to worry about without one ting! <<<<<<<<VIRUS>>>>>>>>>>

so yes virus is a problem, but there are also virus on ubuntu, but not that much.

so linux have some compatible problems with videocards and network cards and some other hardware's,

and its also not compatible with alot of game's like teso or world of warcraft or oblivion, or the olds games, so why could i choose linux over win7?

the way i want to make this tread is mostly not for my self, but to find a good reasons why could people choose linux.

i know there is all kind of ways around the system, and a lot of different linux os.

but if you could get ur grandma or ur mommy to use this os, why could they choose it?

so this is the question i mean people could get read about, and see the negativ and posetiv sides about, so il let you come with some arguments now.

thanks you for answering and your compassion.