I already explained why FreeBSD makes me happy in another thread, but I forgot to ask for your participation. I think happiness is important, and FreeBSD contributes to it, but I might be wrong. So...
Does FreeBSD make you happy? Explain why.
The first thing is freedom from monetization by Microsoft: popups asking me to turn on OneDrive, to sign up for Minecraft, to use Copilot, and on and on.
(I also gave up on Ubuntu, once my favorite Linux distro, because they are inserting ads on the desktop.)
FreeBSD seems to hit the sweet spot of adding new technology, like ZFS and DTrace, but leaving alone things that have worked well forever, like rc.conf and the whole startup system. With Linux, it seemed like every time I turned around, SystemD had taken over another part of the system and changed all the commands.
An advantage of FreeBSD over Linux is that, as Colin Percival points out (
https://www.daemonology.net/blog/2013-12-09-FreeBSD-EC2-configinit.html), while Linux is configured by commands, FreeBSD is configured by files (for example, rc.conf), making it easier to take an existing system and duplicate it.
And actually, Colin Percival himself is an advantage of FreeBSD. In addition to his other contributions, he has worked tirelessly to make sure FreeBSD works well with every new EC2 offering that AWS comes up with.