OldFatGuy: Wow, thank you all so very much for the info. I guess I never realized there were so many other free options available.
I've known about Linux for years (obviously) but am too scared to make that jump, though I would love to. (Fuck a damn Bill Gates). I can't because I'm not tech savvy enough and am mainly a gamer now (do very little office type apps anymore) and I just need my games to work when I play them. So LibreOffice will be more than sufficient for me, but I can't yet make the jump on OS.
E.g. Linux Mint is easier for a total newbie to install than Windows XP or 7, in my experience. Windows' saving grace is that most people don't have to install it, they have it preloaded on their PC they buy from the store.
If you have a free partition on your hard drive, or a an empty secondary hard drive, you can just install Linux on it. It takes care of setting up so that you can boot to either Windows or Linux, it will not do anything to the Windows partition.
Then again, if you are already using e.g. Windows 7 or newer, I'm unsure why you'd necessarily want to use Linux, other than out of interest to see what it is like (which in my opinion is a perfectly good reason to install it). Take it with open mind and as a learning experience: many things are done differently in Linux than in Windows, even using lots of command line as well, For basic use though, it doesn't differ much from using Windows (browsing the web, using utilities etc.).
I can see some other good reasons too to want to use Linux:
1. You buy a new PC without any OS, and don't want to pay for Windows. (I've never had this situation especially now that I am a laptop user; my PCs always come with preloaded Windows).
2. You have some old PC/laptop that has e.g. Windows XP, and you want to give the PC a new life (also to securely go to Internet etc., something that XP is not that suitable anymore, going online with it is like walking on empty shells of eggs, tread very carefully...).
Install Linux (Mint), and there you go. And as explained before, you can even install Linux beside your old Windows installation, you don't necessarily have to get rid of it if there is some reason you want to keep the Windows installation too (in my case: playing old Windows games on them). This is the main reason for me to have Linux Mint installed on many of my (older) PCs. My newest PC is Windows-only at this point.
3. You can visit pr0n sites and what have you without any remorse or much of fear that clicking on a link or saying yes to the dialog box would get your PC infected. Go nuts! I know you always wanted to see what really is behind that "increase your dick length" ad, but were afraid to click on it on Windows.
I guess there is a theoretical possibility for a Linux computer to get infected, but the chances are close to nil. Partly because Linux PC users are not the target of malware makers, and because it is harder to make an efficient malware that would infect a Linux box effectively.
I recall when some shady site offered to install a (Windows) driver for my Linux PC. Sure buddy, do your best. :)
Oh, and I am using MS Office on my work laptop, because my employer expects me to use it, and I want to be sure I am as compatible as possible with the documents, spreadsheets and presentations I need to edit at work.
On my home PCs, I've routinely installed LibreOffice, both in Windows and Linux. I don't use it that much though at home, I'm not writing a book or making presentations to my folks.