As of today, Windows is 21 years old. It launched November 20, 1985. Windows has come a long way since its first iteration.
I didn’t pay much attention to Windows until 3.0 came out. A friend of mine tried to get me into Windows development during 2.0, but I couldn’t see the value for the apps I was writing. Most of the people I knew wanted fast, easy-to-use DOS apps, and not programs written that they’d have to run under Windows. By Windows 3.1 though, I’d made most of the transition though and as networking slowly improved, more and more of the business customers stepped forward wanted to run Windows. As a PC developer I rode the wave of porting DOS apps to Windows throughout much of the early 90s.