Americanized Remakes

[Q?]

I just saw Funny Games US yesterday on dvd and I saw a thread about the remake of Death at a Funeral from UK and I realized that this subject hasn't been covered much.
There's a lot to discuss, such as are there any real good reason for an americanized remake other than profit?
Just a reminder, foreign movies that are remade to the US!

A few examples of already made and upcoming:
Funny Games US - I think this is an exception, it very uncomfortable throughout and I thought it was well executed, maybe it's because the original director directed this? But ultimately not necessary as I've read that the original was just as good or something to that effect.
The Grudge - Well this is obvious and if you didn't like this one I recommend you to see the original and the sequel, Ju-on.
I remember I went with a friend to the cinema, we had absolutely no idea of what this was. We saw no trailers no nothing other than the poster for it.
We were both scared sh**less! Man that as a ride!
Ju-on is in my top 5 of all time and I believe that this version is leagues better than the remake, highly recommended! it's japanese btw.
Let Me In - currently remade from Let The Right One In.
I have to say BOO!!!!!!!! Don't fix it it ain't broken!

[Show spoiler]I'll just avoid it

Kingdom Hospital TV series http://www.imdb.com/title/tt0324864/ - from the danish tv series Riget http://www.imdb.com/title/tt0108906/.
Again I've read the original is superior but I haven't seen the remake.
Anybdoy seen the US?

In my opinion the remakes are ultimately unnecessary, the original movie or series must have already been good to have been remade.
But I'm interested to hear from you americans (and the rest of you of course)
If americanized remakes does you any good?