If you’re interested in why some users have FreeBSD as their operating system of choice, this thread from /r/sysadmin documents a bunch of pros and cons from system administrators all around.
The top comment reads:
- better networking implementation
- having a single source for everything (as opposed to kernel vs os)
- the ports collection
- the bsd startup system
- the freebsd community
Some people may NOT prefer these, but others do. It all comes down to preference and what you are using the system for.
Thanks to http://www.dragonflydigest.com/2015/10/17/16916.html for linking this post.