The 640K thing precipitated the first program I ever wrote. If you can call it that.

I had a bunch of games I wanted to play in the early/mid 1990s, including Wing Commander. Each one seemed to require it's own config.sys/autoexec.bat, so I wrote a menu type thing to choose the game and do the appropriate setup.

The experience made me think about what else I could do by joining a few commands together. I wish the internet had been available to me then, because I would have made much faster progress if something like stackoverflow had existed.