I came back to FreeBSD when I started at Netflix. Given my "once burned, twice shy" feelings about the ports system, I came back only because FreeBSD has ZFS boot environments, which makes rolling back from a bad update trivial.

I also ran PC-BSD at the time. They packaged stuff I cared about (eg, Firefox) with all dependencies, similar to how I understand NixOS works now.. This eventually faded out and became more like normal FreeBSD, and I finally converted to normal FreeBSD