I have been using LaTeX on a daily basis since 1992, when I was a graduate student. I started using ConTeXt in 2017, although I was curious about it since the late 1990s, when I saw some beautiful documents produced with it.
I like ConTeXt for the high level facilities it provides, for the control it gives the user, and for the integral feel arising from its self-contained system which does not require one to load external packages with subtle interactions.
== Contributions to ConTeXt Garden ==
* [https://tex.stackexchange.com/q/397607/146025 Multiple fallbacks in ConTeXt font synonyms]