The list of reasons to use Linux instead of Windows is huge and can disagree, but even not agreeing the reasons are undeniable.
The fact of being free is not really the most relevant for domestic users. A couple of Windows licenses would not be the end of the world, but for corporations that have tens, hundreds, or even thousands of computers can be a game-changer.
The modular structure of the Linux systems makes it absolutely powerful while loading only what is necessary and it also manages the processes and virtual memory excellently. That characteristic makes Linux the best choice for servers and old computers.
But if you are not going to use it to provide any network service (HTTP, FTP, mail, file share…), is it worth it for domestic users? Absolutely yes!
You can download and run Linux straight from a pen drive without installing it to try. There is no previous knowledge necessary to use it. You may find things in different places you are in used to if you use Windows or Mac, but everything is there, if not by default, you can always install one component that may offer the functionality you need.
So, how to start?
Pick one distribution. I advise Ubuntu [https://ubuntu.com/] because this very popular distribution has so much support online that makes your life easy. There are uncountable tutorials, how-tos, and stable solutions available on the internet.
Follow the steps to download and load the Linux in a pen drive, USB stick, memory card or the old fashion CD/DVD. You will probably need to enable your BIOS to boot from your USB. Then you can run it and discover these new worlds.
Linux experience is a very employable skill, consider this statement and add it to your resume.
The desktop version (graphic environment) does all of this a visual way but you may want to know some useful terminal commands:
sudo apt update
sudo apt upgrade
sudo apt install <program>
These commands respectively update the software database list, download from the repository and checking each program you have already installed for the new version, perform the upgrade of those ones that are outdated in your system, and install a new program straight from the internet with no effort at all!