I just had the interesting experience of upgrading a FreeBSD box from 9.x (2012) to 13.1 (2023). It had been turned off for a few years while I was off playing

I just had the interesting experience of upgrading a FreeBSD box from 9.x (2012) to 13.1 (2023). It had been turned off for a few years while I was off playing with industry. The process was shockingly smooth. The conf files are mostly in the same places. It was... nice. At the same time I took my desktop from Ubuntu 14 (2014) to 22 and ended up giving up and reinstalling. That was more expected. I was shocked that the FreeBSD upgrade just worked.