Perhaps a remake is worth it - perhaps it is not. Thankfully it is all down to personal taste. Do you truly love the original, or do you feel a remake can offer something fresh and exciting? When my workmate asked me if I had seen the new RoboCop film, my considered and well-rehearsed answer was simply this: "I have a pristine Blu-Ray disc of Paul Verhoeven's 80s classic original at home - I consider this film to be a masterpiece. I will not go to see the remake for two reasons: One, because I do not want to spend my hard earned money on a film that I consider pointless. And Two, what can a remake possibly give me that my Blu-Ray original already does?"
(Now, a remake of Showgirls... I'd buy that for a dollar!)