Server - Linux Compat

[Grant Peel]

Hi all,

When I was young, many many moons ago, and I installed FreeBSD 4.4 for the 
first time, I enabled linux compatability ...

Each build since, I have enabled it ...

So not I am at the point of asking myself why?

All I run is webservers and namesrvers, you know, Bind, Apache, Mysql, 
vmpop3d, PHP, Exim and shh...not to mention a few utils, ipa, ipfw etc.

Does anyone have any compelling reason I should continue to enable linux 
compatability?

Are there any pitfalls (Security, Performance) in doing so?

-Grant