No matter WHAT RPG you may play, there always has to be a little "suspension of disbelief". The purpose of an RPG is to have fun within the confines of a particular universe or setting. I find that for the most part, too much realism does tend to be a big killjoy when it comes to games. While some revel in the detail of some settings, my friend Chuck for example loves Twilight 2000 because its basically modern warfare and is heavy into modern weapons. Others, just dont care and just want something cool.
As a peace officer and someone who has done a lot of work in private security, I still enjoy hearing about the (mis)adventures of the Lone Star/KE-types. Do I see glaring inaccuracies when it comes to things like due process, you betcha. Still like the game and I like to give the average RPG fan enough credit in that they KNOW that any RPG is an approximation, not recreation.