I bought counterstrike source way back in like 2008/2009 when I got a computer fast enough to play it. Steam was pushing garrysmod as a 5 dollar bundle purchase with counterstrike, and I bought that too on a whim.

I liked garrysmod more than cs:s, and played it a bunch. Eventually I figured out how to add wiremod to the game, which also involved using svn (a source control precursor to git)

I learned basic digital circuits and boolean logic by making bases with elevators and fancy alarm systems that would shoot intruders with turrents and stuff.

Eventually wiremod added a programming language called expression2, which was a mashup of c and lua. I basically taught myself coding because of a video game.

This lead me to get into computer programming, and eventually computer security, which ended up being a lucrative career path.... So thanks Garry for your mod, and thanks Gabe for pushing said mod to kids that just wanted to shoot virtual terrorists. That 5 dollar game is responsible for a good chunk of my life :)