peter lorre movies

We often hear people use the term "just not as before" in relation to the cinema. Many strong attachment to the view that films these days are not as good as they are used. Many feel that the films of the 30s, 40's and 50's to be true masterpieces. When we speak of the best films of all time films as Citizen Kane, Casablanca and Gone with the Wind often hear pop.

Why are people so stubborn that movies today compared to fat which is called the 'Golden Age' of the film and why films were better for so many years 50/60? And why is that young people feel in modern society Transformers, Spider-Man and examples of classic cinema surf?I know many people (often young people in society) that looks down on any movie made before 1990.