I don't really have strong feelings on remakes one way or the other. They're either as good or better than the original; 3:10 To Yuma, Ocean's 11, Batman Begins, Casino Royale*, Star Trek09, True Grit - or they're bad;Planet Of The Apes, Willy Wonka.
So, they are either good...or they are done by Tim Burton? ;)
It's my understanding that films like True Grit attempt to better present the original source - usually a novel, than previous attempts.
Movies like casino Royale and Star Trek generally attempt to bling in a new audience and in both cases they succeeded.
I saw Star Trek [09] with some friends who all have wildly different tastes and some who had never been interested on Star Trek. We all walked away satisfied and entertained.