One of my hobbies is to install older versions of windows and play around with them a bit - at the moment I have 86Box emulating an old machine with windows 3.11 installed and Visual C++, and I'm writing a little implementaiton of DFT so I can simulate a water molecule. Mostly because I want to go back to the days of when I had a 486 in my bedroom, I finally got a graphical desktop working, and the feeling of joy with the old wallpapers, the clock running, a coding IDE, I spent hours in there learning about memory allocations, functions, OpenGL, such good memories that turned into a lifelong career.