FreeBSD is based on UNIX--it was born out of BSD UNIX. ... The main reason why we prefer FreeBSD over Linux is performance. FreeBSD feels significantly faster and more responsive than the several major
Why should I use BSD instead of Linux?
Broadly, the code base of BSD systems is more tightly controlled than a typical linux distro. You will get something a bit more like a traditional unix and the system is very robust with a more conservative change policy.
Is BSD safer than Linux?
Security
Although it's been in the community for decades that the BSD variants of Unix systems are more secure than their Linux counterparts, we do not stand with such statements. Without misconfiguration from the user end, both FreeBSD and Linux are almost impossible to penetrate.