A great article on why to use SeLinux

[Bruno Wolff III]

On Sat, Mar 01, 2008 at 11:43:56 -0800,
  Konstantin Svist <fry.kun at gmail.com> wrote:
> The average Joe won't even go this far - in other words, he won't 
> understand how to work with it - meaning it's NOT suited for desktops.

You don't have to understand selinux in order to benefit from it.
And people not understanding it isn't equivalent to desktop systems.
It IS most definitely suitable for desktop use. It might not be
suitable for some classes of people who do things that might commonly
trigger problems, but don't know what to do when they come up. But there
are ongoing improvements it making it easier for people to figure out
what to do.