Asian films remade or being remade…why?

Have you noticed how many there are? A lot... These are some that I know of...

・A Fistful of Dollars
from Yojimbo

・Godzilla (1998) from Gojira (1954)

・The Magnificent Seven
from Seven Samurai

・The Outrage (1964)
from Rashomon (1950)

・The Lake House
from Il Mare

・Mirrors
from Into the Mirror

・Bangkok Dangerous (2008)
from Thailand's Bangkok Dangerous (1999)

・Tortilla Soup (2001)
from Eat Drink Man Woman (1994) (Mandarin)

・"Reservoir Dogs" (1992 film) from
"City on Fire" (1987) (Cantonese)

・Once Upon A Time (1987)
(remake of Windaria, Japanese anime)

・The Ring (2003)
(remake of Ringu (リング), Japanese horror film)

・Shall We Dance? (2004)
(remake of Sharu ui Dansu? （シャルウイダンス？）, Japanese romance drama film)

・The Grudge (2004)
(remake of Ju-On（呪怨）, Japanese horror film)

・Dark Water (2005)
(remake of the same title, Japanese horror film)

・Eight Below (2006)
(Remake of Nankyoku Monogatari, Japanese film)

・The Lake House (2006)
(remake of Il Mare, Korean romance drama film)

・The Pulse (2006)
(remake of KAIRO (回路), or also known as just PULSE, Japanese horror film)

・SILENT HILL (2006)
(Live action remake of same title (サイレントヒル）, Japanese survival horror videogame)

・Strangers (2007)
(Remake of Anjaane, Indian film)

・The Echo (2007)
(Remake of Sigaw, Filipino thriller)

・The Grudge 2 (2007)
(remake of Ju-On 2 (呪怨 2), Japanese horror film)

・The Departed (2007)
(remake of Infernal Affairs, Hong Kong Mob/action film)

・The Eye (2008)
(remake of the Gin Gwai（見鬼）, Chinese horror film)

・One Missed Call (2008)
(remake of Chakushin Ari (着信アリ）, Japanese TV series and horror film)

・Shutter (2008)
(remake of same title, Thai horror film)

・Joint Security America (2008)
(Remake of Joint Security Area (공동경비구역), South Korean film )

・My Sassy Girl (2008)
(remake of same title, Korean comedy drama)

・The Uninvited (2009)
(remake of A Tale Of Two Sisters, Korean horror film)

・Dragonball Evolution (2009)
(liveaction of Dragonball, Japanese anime)

・BLOOD: The Last Vampire (2009)
(Remake of same title, Japanese novel and anime series)

・HACHIKO: A Dog's story (2009)
(Remake of Hachiko Monogatari, Japanese film)

・The Grudge 3 (2009)
(Sequel to The Grudge 2, Japanese film.)

・Possession (2009)
(Remake of Addicted (중독), South Korean film)

・Dark Water "Indian Remake" (2009)
(remake of same title, Japanese horror film)

・ BE WITH YOU (2009)
(Remake of 今、愛に行きます（Ima, Ai ni Yukimasu）, Japanese drama film)

・ Infection (2010)
(Remake of Kansen (感染), 2004 Japanese Horror film)

・DEATHNOTE (2010)
(remake of same title, Japanese drama/horror film )
✖Apparently Zac Efron will star as Light in this remake! WTF.
Even though a release date is planned, Roy Lee is still doubting whether it would work having a subtitled film released and would it be better to just remake both entire films. The reason for this is because of the apparent great displease among the American Deathnote fanbase.

・Ghost in the Shell (2010)
(remake of the Japanese anime of the same title)

・AKIRA (2011)
(Live action remake of 1989 anime of same title（アキラ）, Japanese action film)
✖Will be starring Leonardo DeCaprio as Kaneda. The setting will be changed in this movie from post-apocalyptic Tokyo to Manhattan, NY city, wtf!
Also, they are changing not only the setting but the ethnicities and names of all of the characters.

・Resurrection (2011)
(remake of Yomigaeri （よみがえり）, Japanese film)

・Battle Angel (2011)
(Remake of Battle Angel Alita, Japanese film)

・BUBBLEGUM CRISIS (2012)
(Remake of Bubblegum Crisis, classic Japanese anime)

・ASSAULT GIRLS (Unknown)
(Remake of same title, 2009 film, just released this December! )

・Old Boy (Unknown)
(Remake of South Korean movie of same name. Korean name is 올드보이)

A Dirty Carnival (Unknown)
(Remake of South Korean movie of same name)

・Chaser (Unknown)
(Remake of South Korean movie by same name. Korean name is 추격자)

・CASSHERN (Unknown)
(remake of same title（キャーシャン）, Japanese drama/action film)

・The Kurosagi Corpse Delivery Service (Unknown)
(same title, Japanese manga)

・Battle Royale (Unknown)
(remake of same title, Japanese horror film)

・COWBOY BEBOP (Unknown)
(Live action remake of same title, Japanese anime action film)

・Neon Genesis Evangelion (Unknown)
(Remake of popular anime movie of same title)

So my question is... why remake such good films just to put it in english? It just ruins the original don't you think? And the worse part is pretty much 90% of the time our American producers don't even acknowledge that it was a remake of an Asian film to the public!! So basically the general population thinks that it's an american film and then have a misconception that Asian films are terrible or just "hai ya! ching chong kung fu fighting" when there is so much more!
Like one time this guy's like "Oh that jackie chan film is pretty good "FOR an A