Awolnation: Now, I only recently got a computer that can actually run pc games well, so I'm still relatively new to the whole computer gaming scene (and I've been super busy with school lately too :S). I see a lot of people, especially on these forums that support linux and praise it a lot (like you :P). I know it's a different operating system that can replace windows (and maybe mac? I don't know, I can't affoard a mac anyways! :P), but what makes Linux so awesome and a must have? Like what reasons are there to use it over windows? Anyways, thanks again! :D
Freedom: Your computer is yours, there's no DRM or so to dictate how you can use it. You can choose which updates to install and when to install them. There are also a huge amount of options for customisation available if you want to tweak things.
You have the freedom to choose between a wide selection of distros, each with their own special features/advantages and disadvantages (which admittedly can also be a disadvantage in itself; I'd recommend starting out with Mint or so until you know enough to make an informed decision about other distros, if you decide that you want something different).
If the maintainer of the distro you choose makes a change you don't like you can reverse it - or simply move to another distro if it's a bigger change, as you're not tied to any particular distro.
Privacy: There's no 'spying'/'telemetry' built in (except for Ubuntu which has/had an optional Amazon search thing), and where data collection is requested you can decline/turn it off - and when such options are turned off they respect your decision and *stay off* :p
Security: Linux is in general more secure. It has security flaws like any other OS, but they tend to be more difficult to exploit due to the way Linux is set up & get fixed a lot more rapidly once discovered. Malware is also a lot rarer for Linux than other OS'
I also find that it's a lot faster to get a Mint install set up than Windows, both to install and to set up as there are far fewer options and tweaks that I need to make.
It does have its downsides though, e.g. it's quite different to Windows at its core, which can take some getting used to when you're only familiar with Windows. Also a lot of software and games are not available for Linux (Wine helps a lot with this for older software at least), and support for certain customised/uncommon hardware can be lacking - but this situation is improving as more people start using Linux, making it easier for others to learn & giving developers more incentive to support it officially.
Take a look at my guide if you want to learn more :)
https://www.gog.com/forum/general/the_try_linux_repostrewrite