WSL is the best feature added to Windows in the last decade
There have been a lot of features added to Windows over the years, and WSL is arguably the best.

When Microsoft slipped the first public preview of the Windows Subsystem for Linux (WSL) into the Windows 10 Anniversary Update in August 2016, it mostly appeared to be a niche convenience aimed at developers who missed Bash and a Linux terminal. Few outside the Insider community guessed it would grow into a fully fledged, GPU-accelerated, GUI-capable Linux environment, maintained and delivered by Windows Updates and the Microsoft Store. Yet, nearly a decade later, WSL has grown and flourished into something more, and is arguably one of the biggest features added to Windows in a long time.