Broken Chair, Needs Fixing

John Carpenter has made a handful of excellent films, a few interesting but flawed films, and quite a number of train wreck equivalents. So why do the studios think that it's a good idea to remake the good ones?
I mean, do we really need a new Assault on Precinct 13 or a new Fog, when there are Carpenter movies out there that have interesting elements that failed to rise above slightly shoddy filmmaking?
Pah. Remakes are stinky arse.