Rombor said:
I think it's probably because it's one of the most famous weapons.
I second this statement. I once heard it said that the Desert Eagle is the Katana of pistols; overhyped, overused, and merely a lazy shorthand way of saying that the wielder is some kind of badass. I have some suggestions for those developers intent on featuring big chrome phallic symbols in their FPS games, though:
*Taurus "Raging Bull" - .454 Casull. Last seen in Rainbow Six: Vegas.
*Arcadia Machine & Tool "AutoMag" IV and V - .44 Magnum and .50 Action Express, respectively.
*Magnum Research Industries "BFR" - .480 Ruger, etc. No, "BFR" doesn't actually mean "Big F***ing Revolver", but that doesn't mean it isn't one regardless...
*Smith & Wesson .500 Magnum Revolver - .500 S&W Magnum (a bit redundant, but at least it's easy to remember)
I featured a number of these guns in a Tabletop RPG I ran recently. The main characters were all Action Hero archetypes, and considering the levels of wrist-strength necessary to control such guns, it makes sense in context. Whenever somebody still chose the Desert Eagle after viewing my list, though, I made sure to give them a dope slap and an EXP penalty for unoriginality later.