A reason to love #FreeBSD : I am the kind of person that runs a system for a while and gets pissed off that it's not "clean" after a few stray package installs. Jails solve that hands down. Containers always felt "tacked on" and a band aid. Jails honestly feel "this is how it was supposed to be".
Kinda wish #OpenBSD had an alternative to it though. On the networking side It just wins, though opinionated (but for good reasons and cause).
I am just a happy camper in Unix land again.