I made the switch when windows ME was released, right now I’m using win10 for work because of some software that really doesn’t have an alternative in Linux but I do run it on all of my other computers. Benefits:

• customization: If you want a desktop environment there’s KDE, Gnome or XFCE, if you want just windows or a tiling window manager there’s tons of them too
• package managers: update all your software on your own terms while you brew some coffee.
• scripting capabilities: you can automate lots of stuff with bash.
• scalability: do you have a potato computer, no problem, do you have a nice one, even better.

Edit: I forgot to say that I run Debian on most of my machines.

I run GNU/Linux on all my computers except on the one I use for work because I need to run ETABS and SAP2000, I really wish I had the time and expertise to code my own structural analysis software so I could be free of these.

Ah, I see you are a man of culture as well.

¿What did I miss?

Oh god no. At least use a windows 98 skin