Why do we insist on remaking foreign films?

Recently I noticed that there was going to be an American studio version of "Let the Right One In." For those of you that don't know, its a Swedish film that is an absolutely phenomenal piece of film making that just so happens to be about vampires. For some reason, apparently being about the highest rated Vampire film on http://www.rottentomatoes.com isn't good enough. I mean really, we can do lots of things to improve on its 97% fresh rating and its overall 8.1 score right? The American version is called "Let me In" and already loses cool points with me for not only renaming it, but choosing an absolutely terrible name. This isn't like "Last Man Standing" or some other homage flick like that. This is a trend where studios see a foreign film, decide they really like, then boom, buy the rights to it and make a really crappy direct remake. Normally its with horror movies, The Ring and the Ring 2, One Missed Call, The Grudge, The Eye, (this one was particularly terrible) are all Japanese movies that were decent, but turned into lesser American remakes. However, Let the Right One In and maybe Funny Games, is the only time I have seen a really great critically acclaimed movie given this treatment. Its a truly great movie, why does it need a remake, why not just show it in American theatre's with subtitles? The answer is simple, and sad. American's won't go to the movie theatre to see a movie with subtitles. Its surprising the amount of people I have met that have never seen a movie with subtitles. Studios know, from experience, that making a whole new movie makes more money than distributing a subtitled movie to theatres. And that is just freaking sad. All these great movies, that deserve attention, just won't get it. This is actually pretty evident in the promotional material for Inglourious Basterds. This movie has a larger portion of the film subtitled than it does spoken in English. But watching the promotional material, there is never any real hints that it is subtitled. Why? One would have to think its in large part because many people would have been turned off to realize that most of the best scenes in the movie take place in German or French. American's are missing out on lots of really great films just because they don't want to read some subtitles.