As scottro pointed out, sometimes rebooting is not an option. I have administrated SuSe enterprise systems that emulated mainframes and you can't really tell someone that payroll is unexpectedly going down for a reboot unless the COBOL code was made to allow that feature initially. I have also, administrated simple web servers that were rebooted all the time. This is a edge case in the market that FreeBSD has traditionally been in.I used openSUSE Tumbleweed on a webserver for years and got used to daily rebooting every OS (if no updates that day then it gets rebooted just to clear up any potential odd firmware stuff, memory leaks, or rogue longstanding connections); on a low-end VPS it'd be down maybe 15 secs (my laptop with GNOME boots faster so better server specs could probably have <10s reboots)