I would say my favorite thing about Linux is programming on the platform. Recently I have been learning graphics with SDL2/OpenGL and different graphics under Linux. I graviated towards the platform due to the command line and the vast information about programming and knowledge available.
I use Debian and Ubuntu GNU/Linux nowadays. I started off with slackware as my first distro around 1998. Somtiemes at work I use RedHat/Oracle/CentOS Linux. I mostly use the following programming languages: Python, Go, Java, PHP, Bash. Most my projects involve Linux.
Open Source Projects on GitHub: https://github.com/electronicsleep